diff --git a/mindspore/lite/tools/converter/parser/onnx/onnx_pad_parser.cc b/mindspore/lite/tools/converter/parser/onnx/onnx_pad_parser.cc
index 637aeab950..23e7cddc74 100644
--- a/mindspore/lite/tools/converter/parser/onnx/onnx_pad_parser.cc
+++ b/mindspore/lite/tools/converter/parser/onnx/onnx_pad_parser.cc
@@ -45,6 +45,9 @@ ops::PrimitiveC *OnnxPadParser::Parse(const onnx::GraphProto &onnx_graph, const
         padding_mode = mindspore::PaddingMode::REFLECT;
       } else if (mode == "edge") {
         padding_mode = mindspore::PaddingMode::SYMMETRIC;
+      } else {
+        MS_LOG(ERROR) << "Unsupported pad mode: " << mode;
+        return nullptr;
       }
       prim->set_padding_mode(padding_mode);
     }
diff --git a/mindspore/lite/tools/converter/parser/tf/tf_model_parser.cc b/mindspore/lite/tools/converter/parser/tf/tf_model_parser.cc
index 993fb06919..7d90dd9afb 100644
--- a/mindspore/lite/tools/converter/parser/tf/tf_model_parser.cc
+++ b/mindspore/lite/tools/converter/parser/tf/tf_model_parser.cc
@@ -40,13 +40,14 @@ bool IsTensorListOp(const AnfNodePtr &anf_node) {
          opt::CheckPrimitiveType(anf_node, prim::kPrimTensorListReserve);
 }
 
-AnfNodePtr GetAnfNode(const std::string &name, const std::unordered_map<std::string, AnfNodePtr> &anf_node_map) {
+AnfNodePtr GetAnfNode(const std::string &name, const std::unordered_map<std::string, AnfNodePtr> &anf_node_map,
+                      int index = 0) {
   AnfNodePtr ret = nullptr;
   auto flat_anf_name = TensorFlowUtils::GetFlattenNodeName(name);
   if (anf_node_map.find(flat_anf_name) != anf_node_map.end()) {
     ret = anf_node_map.at(flat_anf_name);
-  } else if (anf_node_map.find(name + ":0") != anf_node_map.end()) {
-    ret = anf_node_map.at(flat_anf_name + ":0");
+  } else if (anf_node_map.find(name + ":" + to_string(index)) != anf_node_map.end()) {
+    ret = anf_node_map.at(flat_anf_name + ":" + to_string(index));
   }
   return ret;
 }
@@ -901,6 +902,10 @@ STATUS TFModelParser::ConvertOps(const tensorflow::NodeDef &node_def,
     MS_LOG(ERROR) << "node " << op_type << " parser failed";
     return RET_ERROR;
   }
+  node_output_num_[node_def.name()] = output_size;
+  for (int i = 0; i < output_size; i++) {
+    node_output_num_[node_def.name() + ":" + to_string(i)] = 1;
+  }
   auto value_node = NewValueNode(std::shared_ptr<ops::PrimitiveC>(primitiveC));
   if (value_node == nullptr) {
     MS_LOG(ERROR) << "value_node is nullptr";
@@ -915,6 +920,32 @@ STATUS TFModelParser::ConvertOps(const tensorflow::NodeDef &node_def,
   // control_depends are not processed currently
   auto anf_node = func_graph_ptr->NewCNode(inputs);
   anf_node->set_fullname_with_scope(node_def.name());
+  status = ProcessControlFlowOp(anf_node, op_type, node_def);
+  if (status != RET_OK) {
+    MS_LOG(ERROR) << "ProcessControlFlowOp failed.";
+    return RET_ERROR;
+  }
+
+  if (!input_name_not_found.empty()) {
+    RecordNullInput(anf_node, input_name_not_found);
+  }
+
+  status = ConvertOutputTensor(node_def, anf_node, anf_node_map, func_graph_ptr, output_size);
+  if (status != RET_OK) {
+    MS_LOG(ERROR) << "Convert output tensors for " << anf_node->fullname_with_scope() << " failed.";
+    return status;
+  }
+
+  status = ConvertQuantParams(inputs.size() - 1, output_size, primitiveC);
+  if (status != RET_OK) {
+    MS_LOG(ERROR) << "Convert quant params for " << anf_node->fullname_with_scope() << " failed.";
+    return status;
+  }
+  return status;
+}
+
+STATUS TFModelParser::ProcessControlFlowOp(CNodePtr anf_node, const string op_type,
+                                           const tensorflow::NodeDef &node_def) {
   if (op_type == "StatelessWhile" || op_type == "While") {
     MS_LOG(INFO) << "find while node:" << node_def.name();
     tensorflow::AttrValue attr_value;
@@ -944,21 +975,7 @@ STATUS TFModelParser::ConvertOps(const tensorflow::NodeDef &node_def,
       MS_LOG(DEBUG) << "parse else name:" << else_name;
     }
   }
-
-  if (!input_name_not_found.empty()) {
-    RecordNullInput(anf_node, input_name_not_found);
-  }
-
-  status = ConvertOutputTensor(node_def, anf_node, anf_node_map, func_graph_ptr, output_size);
-  if (status != RET_OK) {
-    MS_LOG(ERROR) << "Convert output tensors for " << anf_node->fullname_with_scope() << " failed.";
-  }
-
-  status = ConvertQuantParams(inputs.size() - 1, output_size, primitiveC);
-  if (status != RET_OK) {
-    MS_LOG(ERROR) << "Convert quant params for " << anf_node->fullname_with_scope() << " failed.";
-  }
-  return status;
+  return RET_OK;
 }
 
 STATUS TFModelParser::ConvertQuantParams(const size_t &input_size, const size_t &output_size,
@@ -994,13 +1011,15 @@ STATUS TFModelParser::ConvertRootGraphOutputs() {
     auto it = all_node_inputs.find(pair.first);
     if (it == all_node_inputs.end() && pair.second->input_size() > 0) {  // output node not constraint to Identity
       auto origin_name = GetOriginInputName(*(pair.second), tf_root_graph_nodes_);
-      auto anf_node = GetAnfNode(origin_name, anf_root_node_map_);
-      if (anf_node == nullptr) {
-        MS_LOG(ERROR) << "can't find anf node: " << origin_name;
-        return RET_ERROR;
+      for (int i = 0; i < node_output_num_[origin_name]; i++) {
+        auto anf_node = GetAnfNode(origin_name, anf_root_node_map_, i);
+        if (anf_node == nullptr) {
+          MS_LOG(ERROR) << "can't find anf node: " << origin_name;
+          return RET_ERROR;
+        }
+        output_nodes.push_back(anf_node);
+        graph_output_names_.push_back(anf_node->fullname_with_scope());
       }
-      output_nodes.push_back(anf_node);
-      graph_output_names_.push_back(anf_node->fullname_with_scope());
     }
   }
   auto status = MakeAnfGraphOutputs(&output_nodes, anf_root_graph_);
diff --git a/mindspore/lite/tools/converter/parser/tf/tf_model_parser.h b/mindspore/lite/tools/converter/parser/tf/tf_model_parser.h
index 512407a2e5..528049dae7 100644
--- a/mindspore/lite/tools/converter/parser/tf/tf_model_parser.h
+++ b/mindspore/lite/tools/converter/parser/tf/tf_model_parser.h
@@ -60,6 +60,9 @@ class TFModelParser : public ModelParser {
   STATUS ConvertOps(const tensorflow::NodeDef &node_def,
                     const std::map<std::string, const tensorflow::NodeDef *> &tf_node_map,
                     const FuncGraphPtr &func_graph_ptr, std::unordered_map<std::string, AnfNodePtr> *anf_node_map);
+
+  STATUS ProcessControlFlowOp(CNodePtr anf_node, const string op_type, const tensorflow::NodeDef &node_def);
+
   STATUS ConvertRootGraphOutputs();
 
   STATUS ConvertSubgraph();
@@ -95,6 +98,7 @@ class TFModelParser : public ModelParser {
   std::vector<std::pair<CNodePtr, std::vector<std::string>>> nodes_with_null_input_{};
   std::vector<std::string> while_cond_branch_name_;
   std::vector<std::string> if_then_branch_name_;
+  std::unordered_map<std::string, int> node_output_num_;
 };
 }  // namespace lite
 }  // namespace mindspore
diff --git a/mindspore/lite/tools/converter/parser/tf/tf_util.cc b/mindspore/lite/tools/converter/parser/tf/tf_util.cc
index b99a79d3da..b2c83e3264 100644
--- a/mindspore/lite/tools/converter/parser/tf/tf_util.cc
+++ b/mindspore/lite/tools/converter/parser/tf/tf_util.cc
@@ -70,9 +70,13 @@ TypeId TensorFlowUtils::ParseAttrDataType(const tensorflow::NodeDef &node_def, c
 }
 
 bool TensorFlowUtils::DecodeInt64(std::string_view *str_view, uint64_t *value) {
-  if (str_view == nullptr || value == nullptr) {
+  if (value == nullptr) {
+    MS_LOG(ERROR) << "value is nullptr";
+    return false;
+  }
+  if (str_view == nullptr) {
     *value = 0;
-    MS_LOG(ERROR) << "str_view or value is nullptr";
+    MS_LOG(ERROR) << "str_view is nullptr";
     return false;
   }
   auto data = str_view->data();
diff --git a/mindspore/lite/tools/optimizer/graph/functionalize_cond.h b/mindspore/lite/tools/optimizer/graph/functionalize_cond.h
index 7bc1b27886..847aec3016 100644
--- a/mindspore/lite/tools/optimizer/graph/functionalize_cond.h
+++ b/mindspore/lite/tools/optimizer/graph/functionalize_cond.h
@@ -36,7 +36,7 @@ class FunctionalizeCond {
  public:
   FunctionalizeCond(FuncGraphPtr fg, CNodePtr merge_node) : fg_(fg), merge_node_(merge_node) {}
 
-  ~FunctionalizeCond() = default;
+  virtual ~FunctionalizeCond() = default;
 
   STATUS Process();
 
diff --git a/mindspore/lite/tools/optimizer/graph/functionalize_while.h b/mindspore/lite/tools/optimizer/graph/functionalize_while.h
index 0052883135..75e05ce194 100644
--- a/mindspore/lite/tools/optimizer/graph/functionalize_while.h
+++ b/mindspore/lite/tools/optimizer/graph/functionalize_while.h
@@ -35,7 +35,7 @@ class FunctionalizeWhile {
   FunctionalizeWhile(std::vector<AnfNodePtr> node_cluster, const CNodePtr &loop_cond_node, FuncGraphPtr fg)
       : node_cluster_(node_cluster), loop_cond_node_(loop_cond_node), fg_(fg) {}
 
-  ~FunctionalizeWhile() = default;
+  virtual ~FunctionalizeWhile() = default;
 
   // while
   STATUS BuildWhileNode();