diff --git a/MdePkg/Include/IndustryStandard/UefiTcgPlatform.h b/MdePkg/Include/IndustryStandard/UefiTcgPlatform.h
index 8a3e1704af..adbc956f63 100644
--- a/MdePkg/Include/IndustryStandard/UefiTcgPlatform.h
+++ b/MdePkg/Include/IndustryStandard/UefiTcgPlatform.h
@@ -205,6 +205,17 @@ typedef struct tdTCG_PCR_EVENT2 {
   UINT8               Event[1];
 } TCG_PCR_EVENT2;
 
+//
+// TCG PCR Event2 Header
+// Follow TCG EFI Protocol Spec 5.2 Crypto Agile Log Entry Format
+//
+typedef struct tdTCG_PCR_EVENT2_HDR{
+  TCG_PCRINDEX        PCRIndex;
+  TCG_EVENTTYPE       EventType;
+  TPML_DIGEST_VALUES  Digests;
+  UINT32              EventSize;
+} TCG_PCR_EVENT2_HDR;
+
 //
 // Log Header Entry Data
 //