diff --git a/csrcs/fastdeploy/fastdeploy_model.cc b/csrcs/fastdeploy/fastdeploy_model.cc
index 0558dd625..c4dbc70a7 100644
--- a/csrcs/fastdeploy/fastdeploy_model.cc
+++ b/csrcs/fastdeploy/fastdeploy_model.cc
@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 #include "fastdeploy/fastdeploy_model.h"
+#include "fastdeploy/utils/unique_ptr.h"
 #include "fastdeploy/utils/utils.h"
 
 namespace fastdeploy {
@@ -53,7 +54,7 @@ bool FastDeployModel::InitRuntime() {
           << std::endl;
       return false;
     }
-    runtime_ = std::unique_ptr<Runtime>(new Runtime());
+    runtime_ = utils::make_unique<Runtime>();
     if (!runtime_->Init(runtime_option)) {
       return false;
     }
diff --git a/csrcs/fastdeploy/fastdeploy_runtime.cc b/csrcs/fastdeploy/fastdeploy_runtime.cc
index 9207d5cae..e5c41a29a 100644
--- a/csrcs/fastdeploy/fastdeploy_runtime.cc
+++ b/csrcs/fastdeploy/fastdeploy_runtime.cc
@@ -13,7 +13,9 @@
 // limitations under the License.
 
 #include "fastdeploy/fastdeploy_runtime.h"
+#include "fastdeploy/utils/unique_ptr.h"
 #include "fastdeploy/utils/utils.h"
+
 #ifdef ENABLE_ORT_BACKEND
 #include "fastdeploy/backends/ort/ort_backend.h"
 #endif
@@ -276,8 +278,8 @@ void Runtime::CreatePaddleBackend() {
   pd_option.cpu_thread_num = option.cpu_thread_num;
   FDASSERT(option.model_format == Frontend::PADDLE,
            "PaddleBackend only support model format of Frontend::PADDLE.");
-  backend_ = new PaddleBackend();
-  auto casted_backend = dynamic_cast<PaddleBackend*>(backend_);
+  backend_ = utils::make_unique<PaddleBackend>();
+  auto casted_backend = dynamic_cast<PaddleBackend*>(backend_.get());
   FDASSERT(casted_backend->InitFromPaddle(option.model_file, option.params_file,
                                           pd_option),
            "Load model from Paddle failed while initliazing PaddleBackend.");
@@ -306,8 +308,8 @@ void Runtime::CreateOrtBackend() {
                option.model_format == Frontend::ONNX,
            "OrtBackend only support model format of Frontend::PADDLE / "
            "Frontend::ONNX.");
-  backend_ = new OrtBackend();
-  auto casted_backend = dynamic_cast<OrtBackend*>(backend_);
+  backend_ = utils::make_unique<OrtBackend>();
+  auto casted_backend = dynamic_cast<OrtBackend*>(backend_.get());
   if (option.model_format == Frontend::ONNX) {
     FDASSERT(casted_backend->InitFromOnnx(option.model_file, ort_option),
              "Load model from ONNX failed while initliazing OrtBackend.");
@@ -344,8 +346,8 @@ void Runtime::CreateTrtBackend() {
                option.model_format == Frontend::ONNX,
            "TrtBackend only support model format of Frontend::PADDLE / "
            "Frontend::ONNX.");
-  backend_ = new TrtBackend();
-  auto casted_backend = dynamic_cast<TrtBackend*>(backend_);
+  backend_ = utils::make_unique<TrtBackend>();
+  auto casted_backend = dynamic_cast<TrtBackend*>(backend_.get());
   if (option.model_format == Frontend::ONNX) {
     FDASSERT(casted_backend->InitFromOnnx(option.model_file, trt_option),
              "Load model from ONNX failed while initliazing TrtBackend.");
diff --git a/csrcs/fastdeploy/fastdeploy_runtime.h b/csrcs/fastdeploy/fastdeploy_runtime.h
index 1dc5da099..780945458 100644
--- a/csrcs/fastdeploy/fastdeploy_runtime.h
+++ b/csrcs/fastdeploy/fastdeploy_runtime.h
@@ -153,14 +153,7 @@ struct FASTDEPLOY_DECL Runtime {
 
   RuntimeOption option;
 
-  ~Runtime() {
-    if (backend_ != nullptr) {
-      delete backend_;
-      backend_ = nullptr;
-    }
-  }
-
  private:
-  BaseBackend* backend_ = nullptr;
+  std::unique_ptr<BaseBackend> backend_;
 };
 }  // namespace fastdeploy