diff --git a/lite/api/CMakeLists.txt b/lite/api/CMakeLists.txt
index 173de922f930e8c3aa624c9b8808d6bc0f975926..5d9787f4cb587ae32d1eb36da8de7b1a9d7ee0a4 100644
--- a/lite/api/CMakeLists.txt
+++ b/lite/api/CMakeLists.txt
@@ -176,7 +176,7 @@ if(LITE_WITH_LIGHT_WEIGHT_FRAMEWORK AND WITH_TESTING)
    #    FPGA_DEPS ${fpga_kernels})
 endif()
 
-lite_cc_library(paddle_api SRCS paddle_api.cc DEPS op_params tensor)
+lite_cc_library(paddle_api SRCS paddle_api.cc DEPS op_params tensor device_info)
 
 #-----------------------------------------------------------------------------------------------------
 # The final inference library for both CxxConfig and MobileConfig.
diff --git a/lite/api/light_api_impl.cc b/lite/api/light_api_impl.cc
index 5aa9bfb0857050bc0a8a0242249829c0cf59ae83..4dedc5332db3082ee636eabc8eac1215034b2abe 100644
--- a/lite/api/light_api_impl.cc
+++ b/lite/api/light_api_impl.cc
@@ -77,29 +77,5 @@ std::shared_ptr<PaddlePredictor> CreatePaddlePredictor(
   return x;
 }
 
-MobileConfig::MobileConfig(PowerMode mode, int threads) {
-#ifdef LITE_WITH_ARM
-  lite::DeviceInfo::Global().SetRunMode(mode, threads);
-  mode_ = lite::DeviceInfo::Global().mode();
-  threads_ = lite::DeviceInfo::Global().threads();
-#endif
-}
-
-void MobileConfig::set_power_mode(paddle::lite_api::PowerMode mode) {
-#ifdef LITE_WITH_ARM
-  lite::DeviceInfo::Global().SetRunMode(mode, threads_);
-  mode_ = lite::DeviceInfo::Global().mode();
-  threads_ = lite::DeviceInfo::Global().threads();
-#endif
-}
-
-void MobileConfig::set_threads(int threads) {
-#ifdef LITE_WITH_ARM
-  lite::DeviceInfo::Global().SetRunMode(mode_, threads);
-  mode_ = lite::DeviceInfo::Global().mode();
-  threads_ = lite::DeviceInfo::Global().threads();
-#endif
-}
-
 }  // namespace lite_api
 }  // namespace paddle
diff --git a/lite/api/paddle_api.cc b/lite/api/paddle_api.cc
index f2841cee0f208f0484a8f8ebe615883f1fc961bb..954d687a481ae70663b77ea51529054af921dc9d 100644
--- a/lite/api/paddle_api.cc
+++ b/lite/api/paddle_api.cc
@@ -13,6 +13,7 @@
 // limitations under the License.
 
 #include "lite/api/paddle_api.h"
+#include "lite/core/device_info.h"
 #include "lite/core/tensor.h"
 
 namespace paddle {
@@ -73,5 +74,30 @@ std::shared_ptr<PaddlePredictor> CreatePaddlePredictor(const ConfigT &) {
   return std::shared_ptr<PaddlePredictor>();
 }
 
+ConfigBase::ConfigBase(PowerMode mode, int threads) {
+#ifdef LITE_WITH_ARM
+  lite::DeviceInfo::Init();
+  lite::DeviceInfo::Global().SetRunMode(mode, threads);
+  mode_ = lite::DeviceInfo::Global().mode();
+  threads_ = lite::DeviceInfo::Global().threads();
+#endif
+}
+
+void ConfigBase::set_power_mode(paddle::lite_api::PowerMode mode) {
+#ifdef LITE_WITH_ARM
+  lite::DeviceInfo::Global().SetRunMode(mode, threads_);
+  mode_ = lite::DeviceInfo::Global().mode();
+  threads_ = lite::DeviceInfo::Global().threads();
+#endif
+}
+
+void ConfigBase::set_threads(int threads) {
+#ifdef LITE_WITH_ARM
+  lite::DeviceInfo::Global().SetRunMode(mode_, threads);
+  mode_ = lite::DeviceInfo::Global().mode();
+  threads_ = lite::DeviceInfo::Global().threads();
+#endif
+}
+
 }  // namespace lite_api
 }  // namespace paddle
diff --git a/lite/api/paddle_api.h b/lite/api/paddle_api.h
index 36a6a16ee52a87560ac9c9239041e54266eb50a7..e4da4af4a942d46ffe4429e589762a8878faf54b 100644
--- a/lite/api/paddle_api.h
+++ b/lite/api/paddle_api.h
@@ -90,11 +90,20 @@ class LITE_API PaddlePredictor {
 /// Base class for all the configs.
 class LITE_API ConfigBase {
   std::string model_dir_;
+  int threads_{1};
+  PowerMode mode_{LITE_POWER_NO_BIND};
 
  public:
+  explicit ConfigBase(PowerMode mode = LITE_POWER_NO_BIND, int threads = 1);
+  // set Model_dir
   void set_model_dir(const std::string& x) { model_dir_ = x; }
-
   const std::string& model_dir() const { return model_dir_; }
+  // set Power_mode
+  void set_power_mode(PowerMode mode);
+  PowerMode power_mode() const { return mode_; }
+  // set Thread
+  void set_threads(int threads);
+  int threads() const { return threads_; }
 };
 
 /// CxxConfig is the config for the Full feature predictor.
@@ -129,16 +138,11 @@ class LITE_API CxxConfig : public ConfigBase {
 /// MobileConfig is the config for the light weight predictor, it will skip
 /// IR optimization or other unnecessary stages.
 class LITE_API MobileConfig : public ConfigBase {
-  PowerMode mode_{LITE_POWER_HIGH};
-  int threads_{1};
   std::string model_buffer_;
   std::string param_buffer_;
   bool model_from_memory_{false};
 
  public:
-  explicit MobileConfig(PowerMode mode = LITE_POWER_NO_BIND, int threads = 1);
-  void set_power_mode(PowerMode mode);
-  void set_threads(int threads);
   void set_model_buffer(const char* model_buffer,
                         size_t model_buffer_size,
                         const char* param_buffer,
@@ -148,8 +152,6 @@ class LITE_API MobileConfig : public ConfigBase {
     model_from_memory_ = true;
   }
 
-  PowerMode power_mode() const { return mode_; }
-  int threads() const { return threads_; }
   bool model_from_memory() const { return model_from_memory_; }
   const std::string& model_buffer() const { return model_buffer_; }
   const std::string& param_buffer() const { return param_buffer_; }