diff --git a/core/predictor/framework/infer.h b/core/predictor/framework/infer.h
index e8c0ff47d86f081516a35576655f843a28b0591b..51cfb95a8d56d4261b9dab99df5216c5e6c79733 100644
--- a/core/predictor/framework/infer.h
+++ b/core/predictor/framework/infer.h
@@ -603,13 +603,13 @@ class VersionedInferEngine : public InferEngine {
       LOG(ERROR) << "Failed generate engine with type:" << engine_type;
       return -1;
     }
-    VLOG(2) << "FLGS_logtostderr " << FLAGS_logtostderr;
+    VLOG(2) << "FLAGS_logtostderr " << FLAGS_logtostderr;
     int tmp = FLAGS_logtostderr;
     if (engine->proc_initialize(conf, version) != 0) {
       LOG(ERROR) << "Failed initialize engine, type:" << engine_type;
       return -1;
     }
-    VLOG(2) << "FLGS_logtostderr " << FLAGS_logtostderr;
+    VLOG(2) << "FLAGS_logtostderr " << FLAGS_logtostderr;
     FLAGS_logtostderr = tmp;
     auto r = _versions.insert(std::make_pair(engine->version(), engine));
     if (!r.second) {
diff --git a/python/examples/yolov4/000000570688.jpg b/python/examples/yolov4/000000570688.jpg
new file mode 100644
index 0000000000000000000000000000000000000000..cb304bd56c4010c08611a30dcca58ea9140cea54
Binary files /dev/null and b/python/examples/yolov4/000000570688.jpg differ
diff --git a/tools/serving_build.sh b/tools/serving_build.sh
index 989e48ead9864e717e573f7f0800a1afba2e934a..b70936e5522b52964518d017fece3ceb78d66b87 100644
--- a/tools/serving_build.sh
+++ b/tools/serving_build.sh
@@ -499,6 +499,41 @@ function python_test_lac() {
     cd ..
 }
 
+function python_test_yolov4(){
+    #pwd:/ Serving/python/examples
+    local TYPE=$1
+    export SERVING_BIN=${SERVING_WORKDIR}/build-server-${TYPE}/core/general-server/serving
+    cd yolov4
+    case $TYPE in
+        CPU)
+            python -m paddle_serving_app.package --get_model yolov4
+            tar -xzvf yolov4.tar.gz
+            check_cmd "python -m paddle_serving_server.serve --model yolov4_model/ --port 9393 &"
+            sleep 5
+            check_cmd "python test_client.py 000000570688.jpg"
+            echo "yolov4 CPU RPC inference pass"
+            kill_server_process
+            ;;
+        GPU)
+            python -m paddle_serving_app.package --get_model yolov4
+            tar -xzvf yolov4.tar.gz
+            check_cmd "python -m paddle_serving_server_gpu.serve --model yolov4_model/ --port 9393 --gpu_ids 0 &"
+            sleep 5
+            check_cmd "python test_client.py 000000570688.jpg"
+            echo "yolov4 GPU RPC inference pass"
+            kill_server_process
+            ;;
+        *)
+            echo "error type"
+            exit 1
+            ;;
+    esac
+    echo "test yolov4 $TYPE finished as expected."
+    unset SERVING_BIN
+    cd ..
+}
+
+
 function python_run_test() {
     # Using the compiled binary
     local TYPE=$1 # pwd: /Serving
@@ -510,6 +545,7 @@ function python_run_test() {
     python_test_lac $TYPE # pwd: /Serving/python/examples
     python_test_multi_process $TYPE # pwd: /Serving/python/examples
     python_test_multi_fetch $TYPE # pwd: /Serving/python/examples
+    python_test_yolov4 $TYPE # pwd: /Serving/python/examples
     echo "test python $TYPE part finished as expected."
     cd ../.. # pwd: /Serving
 }