diff --git a/parser/tensorflow/tensorflow_parser.cc b/parser/tensorflow/tensorflow_parser.cc
index 3af6ace..84f3ad2 100644
--- a/parser/tensorflow/tensorflow_parser.cc
+++ b/parser/tensorflow/tensorflow_parser.cc
@@ -54,6 +54,8 @@
 #include "register/scope/scope_pass_registry_impl.h"
 #include "parser/common/auto_mapping_subgraph_io_index_func.h"
 #include "graph/def_types.h"
+#include "framework/common/types.h"
+#include "common/util/mem_utils.h"
 
 using ge::OpParserFactory;
 using ge::Pb2Json;
@@ -230,6 +232,10 @@ const char *const kDpop = "DPOP";
 const char *const kFuncDefLibraryFilePath = "graph_def_library.pbtxt";
 const char *const kAttrNameIsScopeInnerNode = "_is_scope_inner_node";
 const char *const kExternalModel = "_external_model";
+const char *const kAttrNameFileConstantPath = "file_constant_path";
+const char *const kAttrNameLocation = "location";
+const char *const kAttrNameOffset = "offset";
+const char *const kAttrNameLength = "length";
 struct ParseArg {
   const google::protobuf::Message *proto;
   std::string function_name;
@@ -4025,6 +4031,7 @@ Status TensorFlowModelParser::AddExternalGraph(const ComputeGraphPtr &root_graph
         return INTERNAL_ERROR;
       }
       Graph graph = model.GetGraph();
+      GE_CHK_STATUS_RET(ConvertFileConstToConst(graph), "Failed to Convert file const to const.");
       GELOGD("Get subgraph[%s] from model[%s].", ParserUtils::GetGraphName(graph).c_str(), node->GetName().c_str());
       Status ret = MappingAndAddSubGraph(node, graph, root_graph);
       if (ret != SUCCESS) {
@@ -4037,6 +4044,85 @@ Status TensorFlowModelParser::AddExternalGraph(const ComputeGraphPtr &root_graph
   }
   return SUCCESS;
 }
+
+Status TensorFlowModelParser::GetFileConstantPath(const OpDescPtr &op_desc, std::string &file_path, size_t &offset,
+                                                  size_t &length) {
+  NamedAttrs attrs;
+  if (!AttrUtils::GetNamedAttrs(op_desc, kAttrNameFileConstantPath, attrs)) {
+    return SUCCESS;
+  }
+  offset = 0U;
+  length = 0U;
+
+  // offset and length are optional
+  int64_t attr_value = 0;
+  (void)AttrUtils::GetInt(attrs, kAttrNameOffset, attr_value);
+  if (attr_value != 0) {
+    offset = static_cast<size_t>(attr_value);
+  }
+  int64_t attr_length = 0;
+  (void)AttrUtils::GetInt(attrs, kAttrNameLength, attr_length);
+  if (attr_length != 0) {
+    length = static_cast<size_t>(attr_length);
+  }
+  if (!AttrUtils::GetStr(attrs, kAttrNameLocation, file_path)) {
+    REPORT_INNER_ERROR("E19999", "Failed to get file path.");
+    GELOGE(FAILED, "[Check][Param] Failed to get file path.");
+    return FAILED;
+  }
+  return SUCCESS;
+}
+
+Status TensorFlowModelParser::ConvertFileConstToConst(const Graph &graph) {
+  ComputeGraphPtr compute_graph = GraphUtils::GetComputeGraph(graph);
+  for (auto &node : compute_graph->GetAllNodes()) {
+    if (node->GetType() == FILECONSTANT) {
+      auto op_desc = node->GetOpDesc();
+      GE_CHECK_NOTNULL(op_desc);
+      const auto &tensor_desc = op_desc->GetOutputDescPtr(0U);
+      GE_CHECK_NOTNULL(tensor_desc);
+      GELOGD("File constant data type:%u", tensor_desc->GetDataType());
+      GELOGD("File constant GetDimNum:%zu", tensor_desc->GetShape().GetDimNum());
+      GELOGD("File constant data type:%ld", tensor_desc->GetShape().GetShapeSize());
+      int64_t weight_size = 0;
+      GE_CHK_STATUS_RET(TensorUtils::GetTensorSizeInBytes(*tensor_desc, weight_size),
+                        "Failed to get file constant weight size.");
+      std::string file_path;
+      size_t offset = 0U;
+      size_t length = 0U;
+      GE_CHK_STATUS_RET(GetFileConstantPath(op_desc, file_path, offset, length),
+                        "Failed to get file path of %s.", op_desc->GetName().c_str());
+      const size_t file_length = (length == 0U ? static_cast<size_t>(weight_size) : length);
+      const std::string real_path = RealPath(file_path.c_str());
+      GELOGD("Load weight from file:%s, file length:%zu", real_path.c_str(), file_length);
+      GE_CHECK_NOTNULL(real_path.c_str());
+      std::ifstream ifs(real_path, std::ifstream::binary);
+      if (!ifs.is_open()) {
+        REPORT_CALL_ERROR("E19999", "Read file %s failed.", file_path.c_str());
+        GELOGE(FAILED, "[Read][File]Failed, file %s.", file_path.c_str());
+        return FAILED;
+      }
+      ifs.clear();
+      ifs.seekg(offset, ifs.beg);
+      const std::unique_ptr<char[]> bin_buff = std::unique_ptr<char[]>(new (std::nothrow) char[file_length]);
+      (void)ifs.read(static_cast<char *>(bin_buff.get()), static_cast<int64_t>(file_length));
+      ifs.close();
+      GeTensorPtr const_value = MakeShared<GeTensor>(op_desc->GetOutputDesc(0U),
+                                                     reinterpret_cast<uint8_t *>(bin_buff.get()), file_length);
+      if (!AttrUtils::SetTensor(op_desc, ATTR_NAME_WEIGHTS, const_value)) {
+        REPORT_CALL_ERROR("E19999", "Set Attr:%s to op:%s(%s) failed", ATTR_NAME_WEIGHTS.c_str(),
+                          op_desc->GetName().c_str(), op_desc->GetType().c_str());
+        GELOGE(FAILED, "[Set][Attr] %s to op:%s(%s) failed", ATTR_NAME_WEIGHTS.c_str(),
+               op_desc->GetName().c_str(), op_desc->GetType().c_str());
+        return FAILED;
+      }
+      op_desc->SetType(CONSTANT);
+
+      GELOGD("Convert node:%s from file constant to const success.", op_desc->GetName().c_str());
+    }
+  }
+  return SUCCESS;
+}
 }  // namespace ge
 
 namespace domi {
diff --git a/parser/tensorflow/tensorflow_parser.h b/parser/tensorflow/tensorflow_parser.h
index 59b6faa..222718f 100644
--- a/parser/tensorflow/tensorflow_parser.h
+++ b/parser/tensorflow/tensorflow_parser.h
@@ -626,6 +626,8 @@ class PARSER_FUNC_VISIBILITY TensorFlowModelParser : public domi::ModelParser {
   static Status CheckAndUpdateInputDesc(const ge::ComputeGraphPtr &compute_graph);
   static Status UpdateOutputsInfo(const ParserUtils::OutputMapping &final_output_nodes);
   static Status AddExternalGraph(const ComputeGraphPtr &root_graph);
+  static Status GetFileConstantPath(const OpDescPtr &op_desc, std::string &file_path, size_t &offset, size_t &length);
+  static Status ConvertFileConstToConst(const Graph &graph);
 
     /**
    * save <node_name, node_def>