diff --git a/mindspore/lite/src/cxx_api/serialization.cc b/mindspore/lite/src/cxx_api/serialization.cc
index c95dccc5f17..ea26036ea50 100644
--- a/mindspore/lite/src/cxx_api/serialization.cc
+++ b/mindspore/lite/src/cxx_api/serialization.cc
@@ -52,7 +52,7 @@ Status Serialization::Load(const void *model_data, size_t data_size, ModelType m
     MS_LOG(ERROR) << "graph is nullptr.";
     return kLiteNullptr;
   }
-  if (model_type != kMindIR) {
+  if (model_type != kMindIR && model_type != kMindIR_Opt) {
     MS_LOG(ERROR) << "Unsupported IR.";
     return kLiteInputParamInvalid;
   }
@@ -82,7 +82,7 @@ Status Serialization::Load(const std::vector<char> &file, ModelType model_type,
     MS_LOG(ERROR) << "graph is nullptr.";
     return kLiteNullptr;
   }
-  if (model_type != kMindIR) {
+  if (model_type != kMindIR && model_type != kMindIR_Opt) {
     MS_LOG(ERROR) << "Unsupported IR.";
     return kLiteInputParamInvalid;
   }
diff --git a/mindspore/lite/src/lite_session.cc b/mindspore/lite/src/lite_session.cc
index 44e3feb00f5..c76e0a5b557 100644
--- a/mindspore/lite/src/lite_session.cc
+++ b/mindspore/lite/src/lite_session.cc
@@ -1543,7 +1543,13 @@ int lite::LiteSession::CreateSessionByBuf(const char *model_buf, mindspore::Mode
 
 int lite::LiteSession::CreateSessionByPath(const std::string &model_path, mindspore::ModelType model_type,
                                            session::LiteSession *session) {
-  auto *model = lite::ImportFromPath(model_path.c_str());
+  size_t model_size;
+  auto model_buf = LoadModelByPath(model_path, model_type, &model_size);
+  if (model_buf == nullptr) {
+    MS_LOG(ERROR) << "Read model file failed";
+    return RET_ERROR;
+  }
+  auto *model = lite::ImportFromBuffer(model_buf, model_size, true);
   if (model == nullptr) {
     MS_LOG(ERROR) << "Import model failed";
     return RET_ERROR;