diff --git a/BaseTools/Source/Python/UPT/GenMetaFile/GenDecFile.py b/BaseTools/Source/Python/UPT/GenMetaFile/GenDecFile.py
index d39c1827ba..9397359367 100644
--- a/BaseTools/Source/Python/UPT/GenMetaFile/GenDecFile.py
+++ b/BaseTools/Source/Python/UPT/GenMetaFile/GenDecFile.py
@@ -2,7 +2,7 @@
 #
 # This file contained the logical of transfer package object to DEC files.
 #
-# Copyright (c) 2011 - 2016, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -65,7 +65,7 @@ from Library.DataType import TAB_SECTION_END
 from Library.DataType import TAB_SPLIT
 import Library.DataType as DT
 from Library.UniClassObject import FormatUniEntry
-from Library.String import GetUniFileName
+from Library.StringUtils import GetUniFileName
 
 def GenPcd(Package, Content):
     #
diff --git a/BaseTools/Source/Python/UPT/GenMetaFile/GenInfFile.py b/BaseTools/Source/Python/UPT/GenMetaFile/GenInfFile.py
index 9373a14419..bfd422b196 100644
--- a/BaseTools/Source/Python/UPT/GenMetaFile/GenInfFile.py
+++ b/BaseTools/Source/Python/UPT/GenMetaFile/GenInfFile.py
@@ -2,7 +2,7 @@
 #
 # This file contained the logical of transfer package object to INF files.
 #
-# Copyright (c) 2011 - 2017, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -20,7 +20,7 @@ import stat
 import codecs
 import md5
 from Core.FileHook import __FileHookOpen__
-from Library.String import GetSplitValueList
+from Library.StringUtils import GetSplitValueList
 from Library.Parsing import GenSection
 from Library.Parsing import GetWorkspacePackage
 from Library.Parsing import ConvertArchForInstall
@@ -41,7 +41,7 @@ import Logger.Log as Logger
 from Library import DataType as DT
 from GenMetaFile import GenMetaFileMisc
 from Library.UniClassObject import FormatUniEntry
-from Library.String import GetUniFileName
+from Library.StringUtils import GetUniFileName
 
 
 ## Transfer Module Object to Inf files
diff --git a/BaseTools/Source/Python/UPT/Library/CommentGenerating.py b/BaseTools/Source/Python/UPT/Library/CommentGenerating.py
index 9c6e3aad9f..ab1725ff0e 100644
--- a/BaseTools/Source/Python/UPT/Library/CommentGenerating.py
+++ b/BaseTools/Source/Python/UPT/Library/CommentGenerating.py
@@ -1,7 +1,7 @@
 ## @file
 # This file is used to define comment generating interface
 #
-# Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -19,7 +19,7 @@ CommentGenerating
 ##
 # Import Modules
 #
-from Library.String import GetSplitValueList
+from Library.StringUtils import GetSplitValueList
 from Library.DataType import TAB_SPACE_SPLIT
 from Library.DataType import TAB_INF_GUIDTYPE_VAR
 from Library.DataType import USAGE_ITEM_NOTIFY
diff --git a/BaseTools/Source/Python/UPT/Library/CommentParsing.py b/BaseTools/Source/Python/UPT/Library/CommentParsing.py
index 38f7012fd4..4713614c4a 100644
--- a/BaseTools/Source/Python/UPT/Library/CommentParsing.py
+++ b/BaseTools/Source/Python/UPT/Library/CommentParsing.py
@@ -1,7 +1,7 @@
 ## @file
 # This file is used to define comment parsing interface
 #
-# Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -21,8 +21,8 @@ CommentParsing
 #
 import re
 
-from Library.String import GetSplitValueList
-from Library.String import CleanString2
+from Library.StringUtils import GetSplitValueList
+from Library.StringUtils import CleanString2
 from Library.DataType import HEADER_COMMENT_NOT_STARTED
 from Library.DataType import TAB_COMMENT_SPLIT
 from Library.DataType import HEADER_COMMENT_LICENSE
diff --git a/BaseTools/Source/Python/UPT/Library/Misc.py b/BaseTools/Source/Python/UPT/Library/Misc.py
index 719445b3bd..e16d309ef8 100644
--- a/BaseTools/Source/Python/UPT/Library/Misc.py
+++ b/BaseTools/Source/Python/UPT/Library/Misc.py
@@ -1,7 +1,7 @@
 ## @file
 # Common routines used by all tools
 #
-# Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -45,7 +45,7 @@ from Library.DataType import TAB_LANGUAGE_EN_US
 from Library.DataType import TAB_LANGUAGE_EN
 from Library.DataType import TAB_LANGUAGE_EN_X
 from Library.DataType import TAB_UNI_FILE_SUFFIXS
-from Library.String import GetSplitValueList
+from Library.StringUtils import GetSplitValueList
 from Library.ParserValidate import IsValidHexVersion
 from Library.ParserValidate import IsValidPath
 from Object.POM.CommonObject import TextObject
diff --git a/BaseTools/Source/Python/UPT/Library/ParserValidate.py b/BaseTools/Source/Python/UPT/Library/ParserValidate.py
index 2def90a93b..3f8ca9d609 100644
--- a/BaseTools/Source/Python/UPT/Library/ParserValidate.py
+++ b/BaseTools/Source/Python/UPT/Library/ParserValidate.py
@@ -1,7 +1,7 @@
 ## @file ParserValidate.py
 # Functions for parser validation
 #
-# Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -24,7 +24,7 @@ from Library.DataType import MODULE_LIST
 from Library.DataType import COMPONENT_TYPE_LIST
 from Library.DataType import PCD_USAGE_TYPE_LIST_OF_MODULE
 from Library.DataType import TAB_SPACE_SPLIT
-from Library.String import GetSplitValueList
+from Library.StringUtils import GetSplitValueList
 from Library.ExpressionValidate import IsValidBareCString
 from Library.ExpressionValidate import IsValidFeatureFlagExp
 from Common.MultipleWorkspace import MultipleWorkspace as mws
diff --git a/BaseTools/Source/Python/UPT/Library/Parsing.py b/BaseTools/Source/Python/UPT/Library/Parsing.py
index 791e064761..22030e7587 100644
--- a/BaseTools/Source/Python/UPT/Library/Parsing.py
+++ b/BaseTools/Source/Python/UPT/Library/Parsing.py
@@ -2,7 +2,7 @@
 # This file is used to define common parsing related functions used in parsing 
 # INF/DEC/DSC process
 #
-# Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -23,12 +23,12 @@ Parsing
 import os.path
 import re
 
-from Library.String import RaiseParserError
-from Library.String import GetSplitValueList
-from Library.String import CheckFileType
-from Library.String import CheckFileExist
-from Library.String import CleanString
-from Library.String import NormPath
+from Library.StringUtils import RaiseParserError
+from Library.StringUtils import GetSplitValueList
+from Library.StringUtils import CheckFileType
+from Library.StringUtils import CheckFileExist
+from Library.StringUtils import CleanString
+from Library.StringUtils import NormPath
 
 from Logger.ToolError import FILE_NOT_FOUND
 from Logger.ToolError import FatalError
diff --git a/BaseTools/Source/Python/UPT/Library/StringUtils.py b/BaseTools/Source/Python/UPT/Library/StringUtils.py
index b79891ea14..a7a7b86671 100644
--- a/BaseTools/Source/Python/UPT/Library/StringUtils.py
+++ b/BaseTools/Source/Python/UPT/Library/StringUtils.py
@@ -2,7 +2,7 @@
 # This file is used to define common string related functions used in parsing
 # process
 #
-# Copyright (c) 2011 - 2016, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available
 # under the terms and conditions of the BSD License which accompanies this
@@ -13,7 +13,7 @@
 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #
 '''
-String
+StringUtils
 '''
 ##
 # Import Modules
diff --git a/BaseTools/Source/Python/UPT/Library/UniClassObject.py b/BaseTools/Source/Python/UPT/Library/UniClassObject.py
index 66eefee9db..7dcf0cf655 100644
--- a/BaseTools/Source/Python/UPT/Library/UniClassObject.py
+++ b/BaseTools/Source/Python/UPT/Library/UniClassObject.py
@@ -23,7 +23,7 @@ import distutils.util
 from Logger import ToolError
 from Logger import Log as EdkLogger
 from Logger import StringTable as ST
-from Library.String import GetLineNo
+from Library.StringUtils import GetLineNo
 from Library.Misc import PathClass
 from Library.Misc import GetCharIndexOutStr
 from Library import DataType as DT
diff --git a/BaseTools/Source/Python/UPT/Object/Parser/InfDefineObject.py b/BaseTools/Source/Python/UPT/Object/Parser/InfDefineObject.py
index bbc797f65e..3995546593 100644
--- a/BaseTools/Source/Python/UPT/Object/Parser/InfDefineObject.py
+++ b/BaseTools/Source/Python/UPT/Object/Parser/InfDefineObject.py
@@ -2,7 +2,7 @@
 # This file is used to define class objects of [Defines] section for INF file. 
 # It will consumed by InfParser
 #
-# Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -23,7 +23,7 @@ from Logger import StringTable as ST
 from Logger import ToolError
 from Library import GlobalData 
 from Library import DataType as DT
-from Library.String import GetSplitValueList
+from Library.StringUtils import GetSplitValueList
 from Library.Misc import CheckGuidRegFormat
 from Library.Misc import Sdict
 from Library.Misc import ConvPathFromAbsToRel
diff --git a/BaseTools/Source/Python/UPT/Object/Parser/InfPcdObject.py b/BaseTools/Source/Python/UPT/Object/Parser/InfPcdObject.py
index d2712a97f2..62c1e8409a 100644
--- a/BaseTools/Source/Python/UPT/Object/Parser/InfPcdObject.py
+++ b/BaseTools/Source/Python/UPT/Object/Parser/InfPcdObject.py
@@ -2,7 +2,7 @@
 # This file is used to define class objects of INF file [Pcds] section. 
 # It will consumed by InfParser. 
 #
-# Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -31,8 +31,8 @@ from Library.ParserValidate import IsValidCVariableName
 from Library.ParserValidate import IsValidPcdValue
 from Library.ParserValidate import IsValidArch
 from Library.CommentParsing import ParseComment
-from Library.String import GetSplitValueList
-from Library.String import IsHexDigitUINT32
+from Library.StringUtils import GetSplitValueList
+from Library.StringUtils import IsHexDigitUINT32
 from Library.ExpressionValidate import IsValidFeatureFlagExp
 from Parser.InfAsBuiltProcess import GetPackageListInfo
 from Parser.DecParser import Dec
diff --git a/BaseTools/Source/Python/UPT/Parser/DecParser.py b/BaseTools/Source/Python/UPT/Parser/DecParser.py
index 85b8a17fe4..7ac0dfa1ed 100644
--- a/BaseTools/Source/Python/UPT/Parser/DecParser.py
+++ b/BaseTools/Source/Python/UPT/Parser/DecParser.py
@@ -1,7 +1,7 @@
 ## @file
 # This file is used to parse DEC file. It will consumed by DecParser
 #
-# Copyright (c) 2011 - 2016, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -57,10 +57,10 @@ from Object.Parser.DecObject import DecPcdObject
 from Object.Parser.DecObject import DecPcdItemObject
 from Library.Misc import GuidStructureStringToGuidString
 from Library.Misc import CheckGuidRegFormat
-from Library.String import ReplaceMacro
-from Library.String import GetSplitValueList
-from Library.String import gMACRO_PATTERN
-from Library.String import ConvertSpecialChar
+from Library.StringUtils import ReplaceMacro
+from Library.StringUtils import GetSplitValueList
+from Library.StringUtils import gMACRO_PATTERN
+from Library.StringUtils import ConvertSpecialChar
 from Library.CommentParsing import ParsePcdErrorCode
 
 ##
diff --git a/BaseTools/Source/Python/UPT/Parser/InfAsBuiltProcess.py b/BaseTools/Source/Python/UPT/Parser/InfAsBuiltProcess.py
index 4eed04c017..760f28a41f 100644
--- a/BaseTools/Source/Python/UPT/Parser/InfAsBuiltProcess.py
+++ b/BaseTools/Source/Python/UPT/Parser/InfAsBuiltProcess.py
@@ -1,7 +1,7 @@
 ## @file
 # This file is used to provide method for process AsBuilt INF file. It will consumed by InfParser
 #
-# Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -23,7 +23,7 @@ import Logger.Log as Logger
 from Logger import StringTable as ST
 from Logger import ToolError
 
-from Library.String import GetSplitValueList
+from Library.StringUtils import GetSplitValueList
 from Library.Misc import GetHelpStringByRemoveHashKey
 from Library.Misc import ValidFile
 from Library.Misc import ProcessLineExtender
diff --git a/BaseTools/Source/Python/UPT/Parser/InfParser.py b/BaseTools/Source/Python/UPT/Parser/InfParser.py
index 7bea49e0e8..e6048a1d1c 100644
--- a/BaseTools/Source/Python/UPT/Parser/InfParser.py
+++ b/BaseTools/Source/Python/UPT/Parser/InfParser.py
@@ -1,7 +1,7 @@
 ## @file
 # This file contained the parser for INF file
 #
-# Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -23,8 +23,8 @@ import re
 import os
 from copy import deepcopy
 
-from Library.String import GetSplitValueList
-from Library.String import ConvertSpecialChar
+from Library.StringUtils import GetSplitValueList
+from Library.StringUtils import ConvertSpecialChar
 from Library.Misc import ProcessLineExtender
 from Library.Misc import ProcessEdkComment
 from Library.Parsing import NormPath
diff --git a/BaseTools/Source/Python/UPT/Parser/InfParserMisc.py b/BaseTools/Source/Python/UPT/Parser/InfParserMisc.py
index 6a335e8b6c..df32225aff 100644
--- a/BaseTools/Source/Python/UPT/Parser/InfParserMisc.py
+++ b/BaseTools/Source/Python/UPT/Parser/InfParserMisc.py
@@ -1,7 +1,7 @@
 ## @file
 # This file contained the miscellaneous functions for INF parser 
 #
-# Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -25,8 +25,8 @@ import re
 from Library import DataType as DT
 
 
-from Library.String import gMACRO_PATTERN
-from Library.String import ReplaceMacro
+from Library.StringUtils import gMACRO_PATTERN
+from Library.StringUtils import ReplaceMacro
 from Object.Parser.InfMisc import ErrorInInf
 from Logger.StringTable import ERR_MARCO_DEFINITION_MISS_ERROR
 
diff --git a/BaseTools/Source/Python/UPT/Parser/InfPcdSectionParser.py b/BaseTools/Source/Python/UPT/Parser/InfPcdSectionParser.py
index a9b87fdc05..13535a3738 100644
--- a/BaseTools/Source/Python/UPT/Parser/InfPcdSectionParser.py
+++ b/BaseTools/Source/Python/UPT/Parser/InfPcdSectionParser.py
@@ -1,7 +1,7 @@
 ## @file
 # This file contained the parser for [Pcds] sections in INF file 
 #
-# Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -26,7 +26,7 @@ from Library import DataType as DT
 from Library.Parsing import MacroParser
 from Library.Misc import GetSplitValueList
 from Library import GlobalData
-from Library.String import SplitPcdEntry
+from Library.StringUtils import SplitPcdEntry
 from Parser.InfParserMisc import InfParserSectionRoot
 
 class InfPcdSectionParser(InfParserSectionRoot):
diff --git a/BaseTools/Source/Python/UPT/Parser/InfSectionParser.py b/BaseTools/Source/Python/UPT/Parser/InfSectionParser.py
index 727164c2c2..8ba4c3fc08 100644
--- a/BaseTools/Source/Python/UPT/Parser/InfSectionParser.py
+++ b/BaseTools/Source/Python/UPT/Parser/InfSectionParser.py
@@ -1,7 +1,7 @@
 ## @file
 # This file contained the parser for sections in INF file 
 #
-# Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -21,7 +21,7 @@ InfSectionParser
 from copy import deepcopy
 import re
 
-from Library.String import GetSplitValueList
+from Library.StringUtils import GetSplitValueList
 from Library.CommentParsing import ParseHeaderCommentSection
 from Library.CommentParsing import ParseComment
 
diff --git a/BaseTools/Source/Python/UPT/PomAdapter/InfPomAlignment.py b/BaseTools/Source/Python/UPT/PomAdapter/InfPomAlignment.py
index 165ac11127..a5929e15de 100644
--- a/BaseTools/Source/Python/UPT/PomAdapter/InfPomAlignment.py
+++ b/BaseTools/Source/Python/UPT/PomAdapter/InfPomAlignment.py
@@ -1,7 +1,7 @@
 ## @file InfPomAlignment.py
 # This file contained the adapter for convert INF parser object to POM Object
 #
-# Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -20,10 +20,10 @@ InfPomAlignment
 import os.path
 from Logger import StringTable as ST
 import Logger.Log as Logger
-from Library.String import FORMAT_INVALID
-from Library.String import PARSER_ERROR
-from Library.String import NormPath
-from Library.String import GetSplitValueList
+from Library.StringUtils import FORMAT_INVALID
+from Library.StringUtils import PARSER_ERROR
+from Library.StringUtils import NormPath
+from Library.StringUtils import GetSplitValueList
 from Library.Misc import ConvertVersionToDecimal
 from Library.Misc import GetHelpStringByRemoveHashKey
 from Library.Misc import ConvertArchList
diff --git a/BaseTools/Source/Python/UPT/PomAdapter/InfPomAlignmentMisc.py b/BaseTools/Source/Python/UPT/PomAdapter/InfPomAlignmentMisc.py
index cca70e5640..cee4251623 100644
--- a/BaseTools/Source/Python/UPT/PomAdapter/InfPomAlignmentMisc.py
+++ b/BaseTools/Source/Python/UPT/PomAdapter/InfPomAlignmentMisc.py
@@ -1,7 +1,7 @@
 ## @file InfPomAlignmentMisc.py
 # This file contained the routines for InfPomAlignment
 #
-# Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -24,7 +24,7 @@ from Library import DataType as DT
 from Library.Misc import ConvertArchList
 from Object.POM.ModuleObject import BinaryFileObject
 from Object.POM import CommonObject
-from Library.String import FORMAT_INVALID
+from Library.StringUtils import FORMAT_INVALID
 from Library.Misc import CheckGuidRegFormat
 from Logger import StringTable as ST
 
diff --git a/BaseTools/Source/Python/UPT/UnitTest/CommentGeneratingUnitTest.py b/BaseTools/Source/Python/UPT/UnitTest/CommentGeneratingUnitTest.py
index 42a2ba3a6b..9c50d2dc60 100644
--- a/BaseTools/Source/Python/UPT/UnitTest/CommentGeneratingUnitTest.py
+++ b/BaseTools/Source/Python/UPT/UnitTest/CommentGeneratingUnitTest.py
@@ -1,7 +1,7 @@
 ## @file
 # This file contain unit test for CommentParsing
 #
-# Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -28,7 +28,7 @@ from Object.POM.CommonObject import PpiObject
 from Object.POM.CommonObject import PcdObject
 from Object.POM.ModuleObject import HobObject
                                
-from Library.String import GetSplitValueList
+from Library.StringUtils import GetSplitValueList
 from Library.DataType import TAB_SPACE_SPLIT
 from Library.DataType import TAB_LANGUAGE_EN_US
 from Library.DataType import TAB_LANGUAGE_ENG
diff --git a/BaseTools/Source/Python/UPT/UnitTest/CommentParsingUnitTest.py b/BaseTools/Source/Python/UPT/UnitTest/CommentParsingUnitTest.py
index a114ff22a7..4593506e58 100644
--- a/BaseTools/Source/Python/UPT/UnitTest/CommentParsingUnitTest.py
+++ b/BaseTools/Source/Python/UPT/UnitTest/CommentParsingUnitTest.py
@@ -1,7 +1,7 @@
 ## @file
 # This file contain unit test for CommentParsing
 #
-# Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -19,7 +19,7 @@ from Library.CommentParsing import ParseHeaderCommentSection, \
                                    ParseDecPcdGenericComment, \
                                    ParseDecPcdTailComment
 from Library.CommentParsing import _IsCopyrightLine
-from Library.String import GetSplitValueList
+from Library.StringUtils import GetSplitValueList
 from Library.DataType import TAB_SPACE_SPLIT
 from Library.DataType import TAB_LANGUAGE_EN_US
 
diff --git a/BaseTools/Source/Python/UPT/Xml/CommonXml.py b/BaseTools/Source/Python/UPT/Xml/CommonXml.py
index e28aec5b9b..805310de4e 100644
--- a/BaseTools/Source/Python/UPT/Xml/CommonXml.py
+++ b/BaseTools/Source/Python/UPT/Xml/CommonXml.py
@@ -1,7 +1,7 @@
 ## @file
 # This file is used to parse a PCD file of .PKG file
 #
-# Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -21,10 +21,10 @@ CommonXml
 #
 
 from Core.DistributionPackageClass import DistributionPackageHeaderObject
-from Library.String import ConvertNEToNOTEQ
-from Library.String import ConvertNOTEQToNE
-from Library.String import GetSplitValueList
-from Library.String import GetStringOfList
+from Library.StringUtils import ConvertNEToNOTEQ
+from Library.StringUtils import ConvertNOTEQToNE
+from Library.StringUtils import GetSplitValueList
+from Library.StringUtils import GetStringOfList
 from Library.Xml.XmlRoutines import XmlElement
 from Library.Xml.XmlRoutines import XmlElement2
 from Library.Xml.XmlRoutines import XmlAttribute
diff --git a/BaseTools/Source/Python/UPT/Xml/GuidProtocolPpiXml.py b/BaseTools/Source/Python/UPT/Xml/GuidProtocolPpiXml.py
index bfd8d4f7bb..a747b02542 100644
--- a/BaseTools/Source/Python/UPT/Xml/GuidProtocolPpiXml.py
+++ b/BaseTools/Source/Python/UPT/Xml/GuidProtocolPpiXml.py
@@ -1,7 +1,7 @@
 ## @file
 # This file is used to parse a xml file of .PKG file
 #
-# Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -15,9 +15,9 @@
 '''
 GuidProtocolPpiXml
 '''
-from Library.String import ConvertNEToNOTEQ
-from Library.String import ConvertNOTEQToNE
-from Library.String import GetStringOfList
+from Library.StringUtils import ConvertNEToNOTEQ
+from Library.StringUtils import ConvertNOTEQToNE
+from Library.StringUtils import GetStringOfList
 from Library.Xml.XmlRoutines import XmlElement
 from Library.Xml.XmlRoutines import XmlAttribute
 from Library.Xml.XmlRoutines import XmlNode
diff --git a/BaseTools/Source/Python/UPT/Xml/IniToXml.py b/BaseTools/Source/Python/UPT/Xml/IniToXml.py
index 037471056d..aa6f23011b 100644
--- a/BaseTools/Source/Python/UPT/Xml/IniToXml.py
+++ b/BaseTools/Source/Python/UPT/Xml/IniToXml.py
@@ -1,7 +1,7 @@
 ## @file
 # This file is for converting package information data file to xml file.
 #
-# Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -30,7 +30,7 @@ from Library.DataType import TAB_EQUAL_SPLIT
 from Library.DataType import TAB_SECTION_START
 from Library.DataType import TAB_SECTION_END
 from Logger import StringTable as ST
-from Library.String import ConvertSpecialChar
+from Library.StringUtils import ConvertSpecialChar
 from Library.ParserValidate import IsValidPath
 from Library import GlobalData
 
diff --git a/BaseTools/Source/Python/UPT/Xml/ModuleSurfaceAreaXml.py b/BaseTools/Source/Python/UPT/Xml/ModuleSurfaceAreaXml.py
index 51ac48aca5..7480cb575d 100644
--- a/BaseTools/Source/Python/UPT/Xml/ModuleSurfaceAreaXml.py
+++ b/BaseTools/Source/Python/UPT/Xml/ModuleSurfaceAreaXml.py
@@ -1,7 +1,7 @@
 ## @file
 # This file is used to parse a Module file of .PKG file
 #
-# Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available
 # under the terms and conditions of the BSD License which accompanies this
@@ -17,10 +17,10 @@ ModuleSurfaceAreaXml
 '''
 from xml.dom import minidom
 
-from Library.String import ConvertNEToNOTEQ
-from Library.String import ConvertNOTEQToNE
-from Library.String import GetStringOfList
-from Library.String import IsMatchArch
+from Library.StringUtils import ConvertNEToNOTEQ
+from Library.StringUtils import ConvertNOTEQToNE
+from Library.StringUtils import GetStringOfList
+from Library.StringUtils import IsMatchArch
 from Library.Xml.XmlRoutines import XmlElement
 from Library.Xml.XmlRoutines import XmlAttribute
 from Library.Xml.XmlRoutines import XmlNode
diff --git a/BaseTools/Source/Python/UPT/Xml/PackageSurfaceAreaXml.py b/BaseTools/Source/Python/UPT/Xml/PackageSurfaceAreaXml.py
index d6ed8c5e3b..30091c6231 100644
--- a/BaseTools/Source/Python/UPT/Xml/PackageSurfaceAreaXml.py
+++ b/BaseTools/Source/Python/UPT/Xml/PackageSurfaceAreaXml.py
@@ -1,7 +1,7 @@
 ## @file
 # This file is used to parse a Package file of .PKG file
 #
-# Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -17,7 +17,7 @@ PackageSurfaceAreaXml
 '''
 from xml.dom import minidom
 
-from Library.String import GetStringOfList
+from Library.StringUtils import GetStringOfList
 from Library.Xml.XmlRoutines import XmlElement
 from Library.Xml.XmlRoutines import XmlNode
 from Library.Xml.XmlRoutines import XmlList
diff --git a/BaseTools/Source/Python/UPT/Xml/PcdXml.py b/BaseTools/Source/Python/UPT/Xml/PcdXml.py
index 4603918bab..c0dc654a37 100644
--- a/BaseTools/Source/Python/UPT/Xml/PcdXml.py
+++ b/BaseTools/Source/Python/UPT/Xml/PcdXml.py
@@ -1,7 +1,7 @@
 ## @file
 # This file is used to parse a PCD file of .PKG file
 #
-# Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
 #
 # This program and the accompanying materials are licensed and made available 
 # under the terms and conditions of the BSD License which accompanies this 
@@ -25,9 +25,9 @@ from Library.Xml.XmlRoutines import XmlAttribute
 from Library.Xml.XmlRoutines import XmlNode
 from Library.Xml.XmlRoutines import CreateXmlElement
 from Library.Xml.XmlRoutines import XmlList
-from Library.String import GetStringOfList
-from Library.String import ConvertNEToNOTEQ
-from Library.String import ConvertNOTEQToNE
+from Library.StringUtils import GetStringOfList
+from Library.StringUtils import ConvertNEToNOTEQ
+from Library.StringUtils import ConvertNOTEQToNE
 from Library import GlobalData
 from Object.POM.CommonObject import PcdObject
 from Object.POM.CommonObject import PcdErrorObject