diff --git a/mindspore/ccsrc/backend/session/ascend_control_parser.cc b/mindspore/ccsrc/backend/session/ascend_control_parser.cc
index 08b23f3d673dcac5020e05ce4b518a05773ac172..ac2b09bcfb793c8b7d0b2996c5b64f22ae2cfe4d 100644
--- a/mindspore/ccsrc/backend/session/ascend_control_parser.cc
+++ b/mindspore/ccsrc/backend/session/ascend_control_parser.cc
@@ -261,17 +261,16 @@ void AscendControlParser::EraseParameter(NotNull<KernelGraphPtr> root_graph,
     }
   }
 
-  EraseAssign(all_nodes, para_to_written_node, root_graph);
-  root_graph->set_execution_order(exec_order);
+  EraseAssign(std::make_shared<ReferenceCounter>(parameter_count), all_nodes, para_to_written_node, root_graph);
 }
 
-void AscendControlParser::EraseAssign(const std::set<CNodePtr> &all_nodes,
+void AscendControlParser::EraseAssign(std::shared_ptr<ReferenceCounter> parameter_count,
+                                      const std::set<CNodePtr> &all_nodes,
                                       const std::map<AnfNodePtr, CNodePtr> &para_to_written_node,
                                       NotNull<KernelGraphPtr> root_graph) {
   std::vector<CNodePtr> exec_order = root_graph->execution_order();
-  ReferenceCounter parameter_count([](int32_t read, int32_t write) -> bool { return write == 1; });
-  while (parameter_count.HasValidElem()) {
-    auto [para, read, written] = parameter_count.GetOneValidElem();
+  while (parameter_count->HasValidElem()) {
+    auto [para, read, written] = parameter_count->GetOneValidElem();
     MS_LOG(INFO) << para->DebugString() << " was read " << read << " times, written " << written << " times.";
     auto assign_iter = para_to_written_node.find(para);
     if (assign_iter == para_to_written_node.end()) {
@@ -280,7 +279,7 @@ void AscendControlParser::EraseAssign(const std::set<CNodePtr> &all_nodes,
     auto &assign_node = assign_iter->second;
     MS_EXCEPTION_IF_NULL(assign_node);
     if (!IsPrimitiveCNode(assign_node, prim::kPrimAssign)) {
-      parameter_count.EraseElem(para);
+      parameter_count->EraseElem(para);
       continue;
     }
     MS_LOG(INFO) << "Erase " << assign_node->DebugString(5);
@@ -288,10 +287,10 @@ void AscendControlParser::EraseAssign(const std::set<CNodePtr> &all_nodes,
     auto source = assign_node->input(kCNodeAssignSource);
     MS_EXCEPTION_IF_NULL(source);
     auto visit_source = AnfAlgo::VisitKernelWithReturnType(source, 0).first;
-    parameter_count.AddWriteCount(para, -1);
-    parameter_count.AddReadCount(para, -1);
+    parameter_count->AddWriteCount(para, -1);
+    parameter_count->AddReadCount(para, -1);
     if (visit_source->isa<Parameter>()) {
-      parameter_count.AddReadCount(visit_source, read - 1);
+      parameter_count->AddReadCount(visit_source, read - 1);
     }
     for (auto &node : all_nodes) {
       for (size_t i = 0; i < node->size(); ++i) {
@@ -302,6 +301,7 @@ void AscendControlParser::EraseAssign(const std::set<CNodePtr> &all_nodes,
       }
     }
   }
+  root_graph->set_execution_order(exec_order);
 }
 
 void AscendControlParser::EraseLabel(NotNull<KernelGraphPtr> root_graph) {
diff --git a/mindspore/ccsrc/backend/session/ascend_control_parser.h b/mindspore/ccsrc/backend/session/ascend_control_parser.h
index 555de4162297eecd4f901537e6b94b700dbe62b2..4a7a18817b4a862d1e8d0a885180184da428bb00 100644
--- a/mindspore/ccsrc/backend/session/ascend_control_parser.h
+++ b/mindspore/ccsrc/backend/session/ascend_control_parser.h
@@ -22,6 +22,7 @@
 #include <tuple>
 #include <utility>
 #include <functional>
+#include <memory>
 #include "backend/session/kernel_graph.h"
 #include "base/base_ref.h"
 #include "utils/contract.h"
@@ -44,7 +45,7 @@ class AscendControlParser {
   class ReferenceCounter;
 
   static void EraseParameter(NotNull<KernelGraphPtr> root_graph, const std::set<KernelGraphPtr> &graph_list);
-  static void EraseAssign(const std::set<CNodePtr> &all_nodes,
+  static void EraseAssign(std::shared_ptr<ReferenceCounter> parameter_count, const std::set<CNodePtr> &all_nodes,
                           const std::map<AnfNodePtr, CNodePtr> &para_to_written_node,
                           NotNull<KernelGraphPtr> root_graph);
   static void EraseLabel(NotNull<KernelGraphPtr> root_graph);