diff --git a/src/mapleall/maple_be/src/cg/reg_alloc.cpp b/src/mapleall/maple_be/src/cg/reg_alloc.cpp
index b297d4d7fd511e09ac5a6d94440273933b54760f..04442defd2703e2006aa53484f661da07f1d2d8e 100644
--- a/src/mapleall/maple_be/src/cg/reg_alloc.cpp
+++ b/src/mapleall/maple_be/src/cg/reg_alloc.cpp
@@ -105,6 +105,7 @@ bool CgRegAlloc::PhaseRun(maplebe::CGFunc &f) {
 #endif
     /* create register allocator */
     RegAllocator *regAllocator = nullptr;
+    MemPool *tempMP = nullptr;
     if (Globals::GetInstance()->GetOptimLevel() == CGOptions::kLevel0) {
       regAllocator = phaseMp->New<DefaultO0RegAllocator>(f, *phaseMp);
     } else if (Globals::GetInstance()->GetOptimLevel() == CGOptions::kLevelLiteCG) {
@@ -119,7 +120,8 @@ bool CgRegAlloc::PhaseRun(maplebe::CGFunc &f) {
       if (f.GetCG()->GetCGOptions().DoLinearScanRegisterAllocation()) {
         regAllocator = phaseMp->New<LSRALinearScanRegAllocator>(f, *phaseMp);
       } else if (f.GetCG()->GetCGOptions().DoColoringBasedRegisterAllocation()) {
-        regAllocator = phaseMp->New<GraphColorRegAllocator>(f, *phaseMp, *dom);
+        tempMP = memPoolCtrler.NewMemPool("colrRA", true);
+        regAllocator = phaseMp->New<GraphColorRegAllocator>(f, *tempMP, *dom);
       } else {
         maple::LogInfo::MapleLogger(kLlErr) <<
             "Warning: We only support Linear Scan and GraphColor register allocation\n";
@@ -161,6 +163,7 @@ bool CgRegAlloc::PhaseRun(maplebe::CGFunc &f) {
     end = std::chrono::system_clock::now();
     cleanupUS += std::chrono::duration_cast<std::chrono::microseconds>(end - start).count();
 #endif
+    memPoolCtrler.DeleteMemPool(tempMP);
   }
   if (Globals::GetInstance()->GetOptimLevel() > CGOptions::kLevel0) {
     GetAnalysisInfoHook()->ForceEraseAnalysisPhase(f.GetUniqueID(), &CgLoopAnalysis::id);
@@ -172,4 +175,4 @@ bool CgRegAlloc::PhaseRun(maplebe::CGFunc &f) {
 #endif
   return false;
 }
-}  /* namespace maplebe */
\ No newline at end of file
+}  /* namespace maplebe */