diff --git a/mindspore/ccsrc/device/kernel_runtime.cc b/mindspore/ccsrc/device/kernel_runtime.cc
index 99f5d491aca..878fe4a7f86 100644
--- a/mindspore/ccsrc/device/kernel_runtime.cc
+++ b/mindspore/ccsrc/device/kernel_runtime.cc
@@ -42,7 +42,6 @@ KernelRuntime::~KernelRuntime() {
 #ifdef ENABLE_DUMP_E2E
   dump_conf_ptr_ = nullptr;
 #endif
-  reuse_mem_base_ = nullptr;
   mem_reuse_util_ptr_ = nullptr;
 }
 
@@ -476,9 +475,9 @@ void KernelRuntime::ReuseAssignDynamicMemory(session::KernelGraph *graph) {
   bestfit_mem_reuse->Reuse(mem_reuse_util_ptr.get());
   size_t total_allocated_size = bestfit_mem_reuse->GetAllocatedSize();
   MS_LOG(INFO) << "TotalReuseDynamicSize [" << total_allocated_size << "]";
-  auto base_ptr = MallocDynamicMem(total_allocated_size, false);
-  reuse_mem_base_ = base_ptr;
   mem_reuse_util_ptr_ = mem_reuse_util_ptr;
+  auto base_ptr = MallocDynamicMem(total_allocated_size, false);
+  mem_reuse_util_ptr_->set_mem_base(base_ptr);
   auto &kernels = graph->execution_order();
   for (auto &kernel : kernels) {
     AssignNodeOutputMem(kReuseDynamicMem, kernel, kGetAllOuts);
@@ -488,22 +487,13 @@ void KernelRuntime::ReuseAssignDynamicMemory(session::KernelGraph *graph) {
 
 void KernelRuntime::AssignReuseWorkSpaceMem(const AnfNodePtr &node) {
   MS_EXCEPTION_IF_NULL(node);
-  auto key = node.get();
   auto kernel_mod = AnfAlgo::GetKernelMod(node);
   MS_EXCEPTION_IF_NULL(kernel_mod);
   size_t index = 0;
-  auto iter = mem_reuse_util_ptr_->kernel_workspace_refs_.find(key);
   for (auto &size : kernel_mod->GetWorkspaceSizeList()) {
-    if (iter != mem_reuse_util_ptr_->kernel_workspace_refs_.end()) {
-      if (index >= iter->second.size()) {
-        MS_LOG(EXCEPTION) << "index:[" << index << "] is larger than it's workspace size:[" << iter->second.size()
-                          << "]";
-      }
-      auto wk_ref = iter->second[index];
-      auto wk_ptr = reuse_mem_base_ + wk_ref->offset_;
-      AnfAlgo::SetWorkspaceAddr(CreateDeviceAddress(wk_ptr, size, "", kTypeUnknown), index, node.get());
-      index++;
-    }
+    auto wk_ptr = mem_reuse_util_ptr_->GetNodeWorkSpacePtr(node, index);
+    AnfAlgo::SetWorkspaceAddr(CreateDeviceAddress(wk_ptr, size, "", kTypeUnknown), index, node.get());
+    index++;
   }
 }
 
@@ -554,18 +544,7 @@ uint8_t *KernelRuntime::CalDeviceMem(const AnfNodePtr &node, size_t size, int fl
   } else if (flag == kDynamicMem) {
     ptr = MallocDynamicMem(size, false);
   } else if (flag == kReuseDynamicMem) {
-    auto key = node.get();
-    auto iter = mem_reuse_util_ptr_->kernel_output_refs_.find(key);
-    if (iter != mem_reuse_util_ptr_->kernel_output_refs_.end()) {
-      // private member form KernelRuntime
-      memreuse::KernelRefCountPtr kernel_ref_count_ptr = mem_reuse_util_ptr_->kernel_output_refs_[key][index];
-      if (kernel_ref_count_ptr == nullptr) {
-        return ptr;
-      }
-      ptr = reuse_mem_base_ + kernel_ref_count_ptr->offset_;
-    } else {
-      MS_LOG(EXCEPTION) << "node [" << AnfAlgo::GetCNodeName(node) << "] don't exist in kernel_output_refs";
-    }
+    ptr = mem_reuse_util_ptr_->GetNodeOutputPtr(node, index);
   }
   return ptr;
 }
diff --git a/mindspore/ccsrc/device/kernel_runtime.h b/mindspore/ccsrc/device/kernel_runtime.h
index afdb45a6989..ac9a56ed4d8 100644
--- a/mindspore/ccsrc/device/kernel_runtime.h
+++ b/mindspore/ccsrc/device/kernel_runtime.h
@@ -128,9 +128,6 @@ class KernelRuntime {
   size_t total_static_size_ = 0;
   size_t total_dynamic_size_ = 0;
   MemReuseUtilPtr mem_reuse_util_ptr_{nullptr};
-
- private:
-  uint8_t *reuse_mem_base_{nullptr};
 };
 using KernelRuntimePtr = std::shared_ptr<KernelRuntime>;
 }  // namespace device
diff --git a/mindspore/ccsrc/pre_activate/mem_reuse/mem_reuse.cc b/mindspore/ccsrc/pre_activate/mem_reuse/mem_reuse.cc
index 0db3c35196c..2113fec6539 100644
--- a/mindspore/ccsrc/pre_activate/mem_reuse/mem_reuse.cc
+++ b/mindspore/ccsrc/pre_activate/mem_reuse/mem_reuse.cc
@@ -316,5 +316,35 @@ void MemReuseUtil::SetAllInfo(KernelGraph *graph) {
   MemReuseChecker::GetInstance().CheckMemReuseIR(total_refs_list_, kernel_def_ptr_list_, graph);
 #endif
 }
+
+uint8_t *MemReuseUtil::GetNodeOutputPtr(const AnfNodePtr &node, size_t index) const {
+  auto key = node.get();
+  auto iter = kernel_output_refs_.find(key);
+  uint8_t *ptr = nullptr;
+  if (iter != kernel_output_refs_.end()) {
+    if (index >= iter->second.size()) {
+      MS_LOG(EXCEPTION) << "index:[" << index << "] is larger than it's workspace size:[" << iter->second.size() << "]";
+    }
+    auto output_ref = iter->second[index];
+    ptr = mem_base_ + output_ref->offset_;
+  } else {
+    MS_LOG(EXCEPTION) << "node [" << AnfAlgo::GetCNodeName(node) << "] don't exist in kernel_output_refs";
+  }
+  return ptr;
+}
+
+uint8_t *MemReuseUtil::GetNodeWorkSpacePtr(const AnfNodePtr &node, size_t index) const {
+  auto key = node.get();
+  auto iter = kernel_workspace_refs_.find(key);
+  uint8_t *ptr = nullptr;
+  if (iter != kernel_workspace_refs_.end()) {
+    if (index >= iter->second.size()) {
+      MS_LOG(EXCEPTION) << "index:[" << index << "] is larger than it's workspace size:[" << iter->second.size() << "]";
+    }
+    auto wk_ref = iter->second[index];
+    ptr = mem_base_ + wk_ref->offset_;
+  }
+  return ptr;
+}
 }  // namespace memreuse
 }  // namespace mindspore
diff --git a/mindspore/ccsrc/pre_activate/mem_reuse/mem_reuse.h b/mindspore/ccsrc/pre_activate/mem_reuse/mem_reuse.h
index 6ecd222688c..cae0e4565f8 100644
--- a/mindspore/ccsrc/pre_activate/mem_reuse/mem_reuse.h
+++ b/mindspore/ccsrc/pre_activate/mem_reuse/mem_reuse.h
@@ -76,6 +76,9 @@ class MemReuseUtil {
   void set_kernel_def_ptr_list(const KernelDefPtrMaps &kernel_def_ptr_list) {
     kernel_def_ptr_list_ = kernel_def_ptr_list;
   }
+  void set_mem_base(uint8_t *mem_base) { mem_base_ = mem_base; }
+  uint8_t *GetNodeOutputPtr(const AnfNodePtr &node, size_t index) const;
+  uint8_t *GetNodeWorkSpacePtr(const AnfNodePtr &node, size_t index) const;
 
  private:
   int util_index_;
@@ -88,6 +91,7 @@ class MemReuseUtil {
   size_t total_dy_size_ = 0;
   size_t total_workspace_size_ = 0;
   size_t total_reuseworkspace_size_ = 0;
+  uint8_t *mem_base_{nullptr};
 };
 using MemReuseUtilPtr = std::shared_ptr<MemReuseUtil>;
 }  // namespace memreuse