diff --git a/BaseTools/Source/Python/Workspace/DscBuildData.py b/BaseTools/Source/Python/Workspace/DscBuildData.py
index d29b9bf13d..fc1e773417 100644
--- a/BaseTools/Source/Python/Workspace/DscBuildData.py
+++ b/BaseTools/Source/Python/Workspace/DscBuildData.py
@@ -1876,6 +1876,7 @@ class DscBuildData(PlatformBuildClassObject):
                     while '[' in FieldName and not Pcd.IsArray():
                         FieldName = FieldName.rsplit('[', 1)[0]
                         CApp = CApp + '  __FLEXIBLE_SIZE(*Size, %s, %s, %d); // From %s Line %d Value %s\n' % (Pcd.DatumType, FieldName.strip("."), Array_Index + 1, FieldList[FieldName_ori][1], FieldList[FieldName_ori][2], FieldList[FieldName_ori][0])
+        flexisbale_size_statement_cache = set()
         for skuname in Pcd.SkuOverrideValues:
             if skuname == TAB_COMMON:
                 continue
@@ -1888,6 +1889,10 @@ class DscBuildData(PlatformBuildClassObject):
                         if not FieldList:
                             continue
                         for FieldName in FieldList:
+                            fieldinfo = tuple(FieldList[FieldName])
+                            if fieldinfo in flexisbale_size_statement_cache:
+                                continue
+                            flexisbale_size_statement_cache.add(fieldinfo)
                             FieldName = "." + FieldName
                             IsArray = _IsFieldValueAnArray(FieldList[FieldName.strip(".")][0])
                             if IsArray and not (FieldList[FieldName.strip(".")][0].startswith('{GUID') and FieldList[FieldName.strip(".")][0].endswith('}')):