diff --git a/mindspore/lite/src/CMakeLists.txt b/mindspore/lite/src/CMakeLists.txt
index 55f99d388e..1601fbcc27 100644
--- a/mindspore/lite/src/CMakeLists.txt
+++ b/mindspore/lite/src/CMakeLists.txt
@@ -48,6 +48,7 @@ set(LITE_SRC
         ${CMAKE_CURRENT_SOURCE_DIR}/common/string_util.cc
         ${CMAKE_CURRENT_SOURCE_DIR}/common/prim_util.cc
         ${CMAKE_CURRENT_SOURCE_DIR}/common/tensor_util.cc
+        ${CMAKE_CURRENT_SOURCE_DIR}/common/loader_util.cc
         ${CMAKE_CURRENT_SOURCE_DIR}/runtime/allocator.cc
         ${CMAKE_CURRENT_SOURCE_DIR}/runtime/runtime_api.cc
         ${CMAKE_CURRENT_SOURCE_DIR}/runtime/thread_pool.c
@@ -277,6 +278,10 @@ if(DEFINED ARCHS)
     target_link_libraries(mindspore_lite)
 endif()
 
+if(NOT WIN32)
+    target_link_libraries(mindspore-lite dl)
+endif()
+
 if(SUPPORT_TRAIN)
     set_target_properties(mindspore-lite PROPERTIES OUTPUT_NAME "mindspore-lite-train")
     set_target_properties(mindspore-lite_static PROPERTIES OUTPUT_NAME "mindspore-lite-train")
diff --git a/mindspore/lite/src/common/loader_util.cc b/mindspore/lite/src/common/loader_util.cc
new file mode 100644
index 0000000000..07e7038c37
--- /dev/null
+++ b/mindspore/lite/src/common/loader_util.cc
@@ -0,0 +1,60 @@
+/**
+ * Copyright 2021 Huawei Technologies Co., Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "src/common/loader_util.h"
+#include <string.h>
+#include <climits>
+#include "include/errorcode.h"
+#include "src/common/log_util.h"
+
+#ifndef _WIN32
+
+namespace mindspore {
+namespace lite {
+int SoLoader::Open(const char *SoPath, int mode) {
+  if ((strlen(SoPath)) >= PATH_MAX) {
+    MS_LOG(ERROR) << "path is too long";
+    return RET_ERROR;
+  }
+  char resolved_path[PATH_MAX];
+  auto resolve_res = realpath(SoPath, resolved_path);
+  if (resolve_res == nullptr) {
+    MS_LOG(ERROR) << "PATH NOT EXITS";
+    return RET_ERROR;
+  }
+  handler_ = dlopen(SoPath, mode);
+  if (handler_ == nullptr) {
+    MS_LOG(ERROR) << "open path failed";
+    return RET_ERROR;
+  }
+  return RET_OK;
+}
+
+void *SoLoader::GetFunc(const char *FuncName) { return dlsym(handler_, FuncName); }
+
+int SoLoader::Close() {
+  auto close_res = dlclose(handler_);
+  if (close_res != 0) {
+    MS_LOG(ERROR) << "can not close handler";
+    return RET_ERROR;
+  }
+  return RET_OK;
+}
+
+}  // namespace lite
+}  // namespace mindspore
+
+#endif
diff --git a/mindspore/lite/src/common/loader_util.h b/mindspore/lite/src/common/loader_util.h
new file mode 100644
index 0000000000..c784f2b07f
--- /dev/null
+++ b/mindspore/lite/src/common/loader_util.h
@@ -0,0 +1,40 @@
+/**
+ * Copyright 2021 Huawei Technologies Co., Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef MINDSPORE_LITE_SRC_COMMON_LOADER_UTIL_H_
+#define MINDSPORE_LITE_SRC_COMMON_LOADER_UTIL_H_
+
+#ifndef _WIN32
+#include <dlfcn.h>
+
+namespace mindspore {
+namespace lite {
+
+class SoLoader {
+ public:
+  int Open(const char *SoPath, int mode = RTLD_LAZY);
+  void *GetFunc(const char *FuncName);
+  int Close();
+
+ private:
+  void *handler_;
+};
+
+}  // namespace lite
+}  // namespace mindspore
+
+#endif
+#endif
diff --git a/mindspore/lite/test/CMakeLists.txt b/mindspore/lite/test/CMakeLists.txt
index bcf6485e50..b898e98502 100644
--- a/mindspore/lite/test/CMakeLists.txt
+++ b/mindspore/lite/test/CMakeLists.txt
@@ -155,6 +155,7 @@ set(TEST_LITE_SRC
         ${LITE_DIR}/src/common/tensor_util.cc
         ${LITE_DIR}/src/common/file_utils.cc
         ${LITE_DIR}/src/common/utils.cc
+        ${LITE_DIR}/src/common/loader_util.cc
         ${LITE_DIR}/src/common/string_util.cc
         ${LITE_DIR}/tools/common/flag_parser.cc
         ${LITE_DIR}/tools/benchmark/benchmark.cc
@@ -316,6 +317,7 @@ set(TEST_SRC
         ${TEST_DIR}/common/common_test.cc
         ${TEST_DIR}/ut/src/infer_test.cc
         ${TEST_DIR}/ut/src/utils_test.cc
+        ${TEST_DIR}/ut/src/loader_util_test.cc
         ${TEST_DIR}/ut/src/scheduler_test.cc
         )
 
diff --git a/mindspore/lite/test/models_onnx_fp16.cfg b/mindspore/lite/test/models_onnx_fp16.cfg
index e5f8e424c6..80209d2750 100644
--- a/mindspore/lite/test/models_onnx_fp16.cfg
+++ b/mindspore/lite/test/models_onnx_fp16.cfg
@@ -55,6 +55,7 @@ ml_video_edit_imitate_filter.onnx 103
 ml_facedetector.onnx 3
 ml_ei_facedetection.onnx 2
 #ml_video_edit_art_generate.onnx #mul operator overflows, not suitable for fp16
+#ml_voice_detect.onnx #conv operator overflows, not suitable for fp16
 ml_location_lane_counter.onnx 6
 ml_location_lane_counter0.onnx 0.5
 #The encoder an decoder model are used in ml_asr scene, both have value overflow. Not suitable for fp16.
diff --git a/mindspore/lite/test/ut/src/loader_util_test.cc b/mindspore/lite/test/ut/src/loader_util_test.cc
new file mode 100644
index 0000000000..13c3d95531
--- /dev/null
+++ b/mindspore/lite/test/ut/src/loader_util_test.cc
@@ -0,0 +1,45 @@
+/**
+ * Copyright 2021 Huawei Technologies Co., Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "mindspore/lite/src/common/loader_util.h"
+#include "common/common_test.h"
+
+namespace mindspore {
+class LoaderUtilTest : public mindspore::CommonTest {
+ public:
+  LoaderUtilTest() {}
+};
+
+/*
+ in file add.cc, the code is:
+ int add(int a, int b) {return a + b;}
+ use this command to generate so file:
+ gcc add.cc -fPIC -shared -o libadd.so
+ use this command to see the symbol table:
+ nm -D libadd.so
+*/
+TEST_F(LoaderUtilTest, TestAdd) {
+#ifndef _WIN32
+  lite::SoLoader loader;
+  loader.Open("./libadd.so");
+  int (*add)(int a, int b);
+  add = (int (*)(int, int))loader.GetFunc("_Z3addii");
+  int res = add(7, 8);
+  loader.Close();
+  ASSERT_EQ(15, res);
+#endif
+}
+}  // namespace mindspore