diff --git a/common_components/heap/allocator/region_manager.h b/common_components/heap/allocator/region_manager.h
index b228816d2af84cb8fe18925526b3630fe2a54fa1..7968a00c5bc54a3d6ae034d28b1a6fc61c75fc33 100755
--- a/common_components/heap/allocator/region_manager.h
+++ b/common_components/heap/allocator/region_manager.h
@@ -335,7 +335,7 @@ public:
     size_t GetUsedUnitCount() const
     {
         return largeRegionList_.GetUnitCount() + recentLargeRegionList_.GetUnitCount() +
-            pinnedRegionList_.GetUnitCount() + recentPinnedRegionList_.GetUnitCount() +
+            GetPinnedUnitCount() +
             rawPointerRegionList_.GetUnitCount() + readOnlyRegionList_.GetUnitCount() +
             appSpawnRegionList_.GetUnitCount();
     }
@@ -357,6 +357,17 @@ public:
             readOnlyRegionList_.GetAllocatedSize() + appSpawnRegionList_.GetAllocatedSize();
     }
 
+    inline size_t GetPinnedUnitCount() const
+    {
+        size_t pinnedUnitCount =
+            pinnedRegionList_.GetUnitCount() + recentPinnedRegionList_.GetUnitCount();
+        for (size_t i = 0; i < FIXED_PINNED_REGION_COUNT; i++) {
+            pinnedUnitCount += recentFixedPinnedRegionList_[i]->GetUnitCount();
+            pinnedUnitCount += fixedPinnedRegionList_[i]->GetUnitCount();
+        }
+        return pinnedUnitCount;
+    }
+
     inline size_t GetPinnedSpaceSize() const
     {
         size_t pinnedSpaceSize =
diff --git a/common_components/heap/collector/marking_collector.cpp b/common_components/heap/collector/marking_collector.cpp
index db58ee4bbcc3e10084b8182433f42668e87ae30d..485ffa9bc9519a652efa301b56320aafdbe9cd58 100755
--- a/common_components/heap/collector/marking_collector.cpp
+++ b/common_components/heap/collector/marking_collector.cpp
@@ -605,6 +605,7 @@ void MarkingCollector::PreGarbageCollection(bool isConcurrent)
     gcStats.collectedBytes = 0;
     gcStats.smallGarbageSize = 0;
     gcStats.pinnedGarbageSize = 0;
+    gcStats.largeGarbageSize = 0;
     gcStats.gcStartTime = TimeUtil::NanoSeconds();
     gcStats.totalSTWTime = 0;
     gcStats.maxSTWTime = 0;