diff --git a/mindspore/lite/tools/anf_exporter/anf_exporter.cc b/mindspore/lite/tools/anf_exporter/anf_exporter.cc
index 1dc267e005..473e8b29ea 100644
--- a/mindspore/lite/tools/anf_exporter/anf_exporter.cc
+++ b/mindspore/lite/tools/anf_exporter/anf_exporter.cc
@@ -34,7 +34,6 @@
 #include "src/tensor.h"
 #include "src/param_value_lite.h"
 #include "src/common/utils.h"
-#include "ops/partial.h"
 #include "tools/common/graph_util.h"
 #include "src/ops/ops_utils.h"
 
@@ -287,7 +286,6 @@ int AnfExporter::SetGraphInputIndex(const std::unique_ptr<schema::MetaGraphT> &m
 
 int AnfExporter::SetGraphoutputIndex(const CNodePtr &cnode, const size_t subgraph_index,
                                      const std::unique_ptr<schema::MetaGraphT> &meta_graphT,
-                                     const std::unique_ptr<schema::SubGraphT> &sub_graphT,
                                      schema::CNodeT *return_node) {
   MS_ASSERT(nullptr != meta_graphT);
   MS_ASSERT(nullptr != return_node);
@@ -319,9 +317,15 @@ int AnfExporter::SetGraphoutputIndex(const CNodePtr &cnode, const size_t subgrap
   return RET_OK;
 }
 
+bool AnfExporter::HasExported(const FuncGraphPtr &func_graph) {
+  if (fg_subgraph_map_.find(func_graph) != fg_subgraph_map_.end()) {
+    return true;
+  }
+  return false;
+}
+
 int AnfExporter::Anf2Fb(const FuncGraphPtr &func_graph, const std::unique_ptr<schema::MetaGraphT> &meta_graphT,
-                        const size_t &subgraph_index, const bool &keep_graph, const bool &copy_primitive,
-                        const std::unique_ptr<schema::SubGraphT> &sub_graphT) {
+                        const size_t &subgraph_index, const bool &keep_graph, const bool &copy_primitive) {
   int ret = RET_OK;
   auto cnodes = GetOrderedCNodes(func_graph);
   for (const auto &cnode : cnodes) {
@@ -334,19 +338,18 @@ int AnfExporter::Anf2Fb(const FuncGraphPtr &func_graph, const std::unique_ptr<sc
         prim = GetValueNode<std::shared_ptr<Primitive>>(partial_cnode->input(0));
         primT = GetPrimitiveT(partial_cnode->input(0));
         MS_ASSERT(primT != nullptr);
-        auto pos = fg_subgraph_map.find(fg);
-        if (pos != fg_subgraph_map.end()) {
+        auto pos = fg_subgraph_map_.find(fg);
+        if (pos != fg_subgraph_map_.end()) {
           MS_ASSERT(primT->value.AsPartialFusion() != nullptr);
-          primT->value.AsPartialFusion()->sub_graph_index = fg_subgraph_map.at(fg);
+          primT->value.AsPartialFusion()->sub_graph_index = fg_subgraph_map_.at(fg);
         } else {
-          size_t next_subgraph_index = fg_subgraph_map.size() + 1;
-          fg_subgraph_map.insert(std::pair<FuncGraphPtr, int>{fg, next_subgraph_index});
+          size_t next_subgraph_index = meta_graphT->subGraph.size();
           MS_ASSERT(primT->value.AsPartialFusion() != nullptr);
           primT->value.AsPartialFusion()->sub_graph_index = next_subgraph_index;
-          ret = ExportSubgraph(fg, meta_graphT, next_subgraph_index, keep_graph, copy_primitive, cnode);
+          ret = ExportSubgraph(fg, meta_graphT, keep_graph, copy_primitive, cnode);
           if (ret != RET_OK) {
             MS_LOG(ERROR) << "ExportSubgraph failed";
-            break;
+            return ret;
           }
         }
       } else {
@@ -374,7 +377,7 @@ int AnfExporter::Anf2Fb(const FuncGraphPtr &func_graph, const std::unique_ptr<sc
     }
     if (opt::CheckPrimitiveType(cnode, prim::kPrimReturn)) {
       node->name = mindspore::ops::kNameReturn;
-      ret = SetGraphoutputIndex(cnode, subgraph_index, meta_graphT, sub_graphT, node.get());
+      ret = SetGraphoutputIndex(cnode, subgraph_index, meta_graphT, node.get());
       if (ret != RET_OK) {
         MS_LOG(ERROR) << "SetOpOutputN failed";
         break;
@@ -398,26 +401,28 @@ int AnfExporter::Anf2Fb(const FuncGraphPtr &func_graph, const std::unique_ptr<sc
       break;
     }
     meta_graphT->nodes.push_back(std::move(node));
-    meta_graphT->subGraph.at(subgraph_index)->nodeIndices.push_back(node_idx++);
+    meta_graphT->subGraph.at(subgraph_index)->nodeIndices.push_back(node_idx_++);
   }
   return ret;
 }
 
 int AnfExporter::ExportSubgraph(const FuncGraphPtr &func_graph, const std::unique_ptr<schema::MetaGraphT> &meta_graphT,
-                                const size_t &subgraph_index, bool keep_graph, bool copy_primitive,
-                                const std::shared_ptr<AnfNode> &partial_anode) {
-  int ret = RET_OK;
+                                bool keep_graph, bool copy_primitive, const std::shared_ptr<AnfNode> &partial_anode) {
+  if (HasExported(func_graph)) {
+    MS_LOG(INFO) << "Has been exported.";
+    return RET_OK;
+  }
+
   meta_graphT->subGraph.emplace_back(std::make_unique<schema::SubGraphT>());
-  auto &sub_graphT = meta_graphT->subGraph.at(subgraph_index);
+  auto subgraph_index = meta_graphT->subGraph.size() - 1;
+  fg_subgraph_map_[func_graph] = subgraph_index;
   auto subgraph_name = func_graph->get_attr("graph_name");
   MS_ASSERT(subgraph_name != nullptr);
-  sub_graphT->name = GetValue<std::string>(subgraph_name);
-  auto fmk = func_graph->get_attr("fmk");
-  MS_ASSERT(fmk != nullptr);
-  meta_graphT->fmkType = GetValue<int>(fmk);
+  meta_graphT->subGraph.back()->name = GetValue<std::string>(subgraph_name);
 
-  ret = Anf2Fb(func_graph, meta_graphT, subgraph_index, keep_graph, copy_primitive, sub_graphT);
+  int ret = Anf2Fb(func_graph, meta_graphT, subgraph_index, keep_graph, copy_primitive);
   if (ret != RET_OK) {
+    MS_LOG(ERROR) << "Anf2Fb failed";
     ReturnCode::GetSingleReturnCode()->UpdateReturnCode(ret);
     return ret;
   }
@@ -441,11 +446,14 @@ int AnfExporter::ExportSubgraph(const FuncGraphPtr &func_graph, const std::uniqu
 
 schema::MetaGraphT *AnfExporter::Export(const FuncGraphPtr &func_graph, bool keep_graph, bool copy_primitive,
                                         bool train_flag) {
-  static int subgraph_index = 0;
-  this->train_flag = train_flag;
+  this->train_flag_ = train_flag;
   auto meta_graphT = std::make_unique<schema::MetaGraphT>();
-  int ret = ExportSubgraph(func_graph, meta_graphT, subgraph_index, keep_graph, copy_primitive);
+  auto fmk = func_graph->get_attr("fmk");
+  MS_ASSERT(fmk != nullptr);
+  meta_graphT->fmkType = GetValue<int>(fmk);
+  int ret = ExportSubgraph(func_graph, meta_graphT, keep_graph, copy_primitive);
   if (ret != RET_OK) {
+    MS_LOG(ERROR) << "ExportSubgraph failed.";
     ReturnCode::GetSingleReturnCode()->UpdateReturnCode(ret);
     return nullptr;
   }
@@ -455,7 +463,7 @@ schema::MetaGraphT *AnfExporter::Export(const FuncGraphPtr &func_graph, bool kee
 int AnfExporter::ConvertInputCNodeCommonOp(const AnfNodePtr &input_anode, schema::CNodeT *output_cnode) {
   MS_ASSERT(input_anode != nullptr && output_cnode != nullptr);
   auto input_name = input_anode->fullname_with_scope();
-  if (this->train_flag) {
+  if (this->train_flag_) {
     bool found = false;
     if (node_id_map_.find(input_name) != node_id_map_.end()) {
       output_cnode->inputIndex.emplace_back(node_id_map_[input_name]);
@@ -618,7 +626,7 @@ int AnfExporter::ProcessTensor(const ValueNodePtr &valueNode, std::unique_ptr<sc
   (void)std::transform(shape_vector.begin(), shape_vector.end(), std::back_inserter(dims),
                        [](const int64_t &value) { return static_cast<int32_t>(value); });
   (*paramTensor)->dims = dims;
-  if (train_flag && (*paramTensor)->dims.empty()) (*paramTensor)->dims = {1};
+  if (train_flag_ && (*paramTensor)->dims.empty()) (*paramTensor)->dims = {1};
   (*paramTensor)->nodeType = NodeType_ValueNode;
   auto data = value->cast<tensor::TensorPtr>();
   (*paramTensor)->data.resize(data->Size());
@@ -742,7 +750,7 @@ int AnfExporter::ProcessParamValueLite(const ValueNodePtr &valueNode, std::uniqu
   (*paramTensor)->dataType = valueLite->tensor_type();
   (*paramTensor)->dims = valueLite->tensor_shape();
 
-  if (train_flag && (*paramTensor)->dims.empty()) {
+  if (train_flag_ && (*paramTensor)->dims.empty()) {
     (*paramTensor)->dims = {1};
   }
 
@@ -765,7 +773,7 @@ int AnfExporter::ConvertInputValueNode(const std::shared_ptr<AnfNode> &input_ano
   auto paramTensor = std::make_unique<schema::TensorT>();
   auto value = valueNode->value();
   int ret = RET_OK;
-  if (train_flag) {
+  if (train_flag_) {
     paramTensor->name = valueNode->fullname_with_scope();
   }
   if (value->isa<tensor::Tensor>()) {
@@ -861,7 +869,7 @@ void AnfExporter::SetOpOutputNode(const CNodePtr &cnode, const std::unique_ptr<s
       }
       msTensor->nodeType = NodeType_CNode;
       fb_node->outputIndex.emplace_back(meta_graphT->allTensors.size());
-      if (train_flag) {
+      if (train_flag_) {
         std::string name = cnode_name + "_o:" + std::to_string(i);
         node_id_map_[name] = meta_graphT->allTensors.size();
         meta_graphT->allTensors.emplace_back(msTensor);
diff --git a/mindspore/lite/tools/anf_exporter/anf_exporter.h b/mindspore/lite/tools/anf_exporter/anf_exporter.h
index be0cfa8d5e..56087c7a6a 100644
--- a/mindspore/lite/tools/anf_exporter/anf_exporter.h
+++ b/mindspore/lite/tools/anf_exporter/anf_exporter.h
@@ -30,7 +30,6 @@ using mindspore::ops::PrimitiveC;
 
 namespace mindspore::lite {
 
-constexpr const int kPartialMinSize = 3;
 constexpr const int kMainGraphIndex = 0;
 
 class AnfExporter {
@@ -74,28 +73,27 @@ class AnfExporter {
                             const std::unique_ptr<schema::MetaGraphT> &meta_graphT);
   int SetGraphInputIndex(const std::unique_ptr<schema::MetaGraphT> &meta_graphT, const size_t &subgraph_index);
   int SetGraphoutputIndex(const CNodePtr &cnode, size_t subgraph_index,
-                          const std::unique_ptr<schema::MetaGraphT> &meta_graphT,
-                          const std::unique_ptr<schema::SubGraphT> &sub_graphT, schema::CNodeT *return_node);
+                          const std::unique_ptr<schema::MetaGraphT> &meta_graphT, schema::CNodeT *return_node);
   static int ConvertQuantParam(const std::unique_ptr<schema::MetaGraphT> &meta_graph,
                                const std::shared_ptr<mindspore::Primitive> &primitive,
                                const std::unique_ptr<schema::CNodeT> &dst_node);
   int Anf2Fb(const FuncGraphPtr &func_graph, const std::unique_ptr<schema::MetaGraphT> &meta_graphT,
-             const size_t &subgraph_index, const bool &keep_graph, const bool &copy_primitive,
-             const std::unique_ptr<schema::SubGraphT> &sub_graphT);
+             const size_t &subgraph_index, const bool &keep_graph, const bool &copy_primitive);
   int ExportSubgraph(const FuncGraphPtr &func_graph, const std::unique_ptr<schema::MetaGraphT> &meta_graphT,
-                     const size_t &subgraph_index, bool keep_graph, bool copy_primitive,
-                     const std::shared_ptr<AnfNode> &partial_anode = nullptr);
+                     bool keep_graph, bool copy_primitive, const std::shared_ptr<AnfNode> &partial_anode = nullptr);
   static ValueNodePtr GetPartialAnfPrim();
   static CNodePtr CreatePartialCnode(const FuncGraphPtr &fg, AnfNodePtr cnode);
   static std::vector<schema::CNodeT *> GetSubgraphNodes(const std::unique_ptr<schema::MetaGraphT> &meta_graphT,
                                                         const size_t &subgraph_index);
+  bool HasExported(const FuncGraphPtr &func_graph);
 
  private:
   std::map<std::string, int> node_id_map_;
   std::vector<schema::CNodeT *> graph_input_nodes_;
-  std::map<FuncGraphPtr, int> fg_subgraph_map;
-  uint32_t node_idx = 0;
-  bool train_flag = false;
+  // The first item is FuncGraph which has been exported, the second item is the subgraph index in meta_graph
+  std::map<FuncGraphPtr, int> fg_subgraph_map_;
+  uint32_t node_idx_ = 0;
+  bool train_flag_ = false;
 };
 // by default, copy_primitive is false, which means that the MetaGraph and func_graph share the same schema::PrimitiveT.
 // but in PostQuantization, the func_graph need to transfer to MetaGraph first and do MetaGraph pass, which may modify