diff --git a/README-qnn.md b/README-qnn.md
index 781a1f3ef8c44f..530348c3b9ad89 100644
--- a/README-qnn.md
+++ b/README-qnn.md
@@ -86,23 +86,44 @@ TBD
 
 ## Android
 
-### I. Setup Environment
+### 1. Setup Environment
 
 Any **mainstream** Android phone based on Qualcomm's mobile SoC should be supported by llama.cpp + QNN. Qualcomm SM8650-AB Snapdragon 8 Gen 3 based Android phone is preferred.
 
-### II. Build llama.cpp + QNN backend
+### 2. Build llama.cpp + QNN backend
 
+- download and install QNN SDK from Qualcomm offcial website
 
-Please refer to [project kantv](https://github.com/zhouwg/kantv)
+```
+  https://qpm.qualcomm.com/#/main/tools/details/qualcomm_ai_engine_direct
 
+  https://developer.qualcomm.com/software/hexagon-dsp-sdk/tools
 
-or
+```
 
+  the default installation path is /opt/qcom/aistack/qnn/2.20.0.240223/
 
-using [test-backend-ops.cpp](tests/ggml-qnn) to verify it on Qualcomm mobile SoC based Android phone
 
-### III. Run the inference on Qualcomm mobile SoC based Android phone
+- using test-backend-ops.cpp to verify QNN backend on Qualcomm mobile SoC based Android phone
 
+```
+  cd tests/ggml-qnn
+
+  ./build-ggml-qnn.sh
+
+```
+
+### 3. Run UT of QNN backend on Qualcomm mobile SoC based Android phone
+
+```
+
+  ./run-ggml-qnn.sh
+
+```
+
+### 4. Run the inference on Qualcomm mobile SoC based Android phone
+
+Pls refer to [project kantv](https://github.com/zhouwg/kantv) firstly.
 
 ![504893116](https://github.com/zhouwg/kantv/assets/6889919/51f0b277-eca4-4938-86f5-415dbf5897e7)
 
diff --git a/tests/ggml-qnn/build-ggml-qnn.sh b/tests/ggml-qnn/build-ggml-qnn.sh
index 980b7c6b889ae4..0d8744ced96e8e 100755
--- a/tests/ggml-qnn/build-ggml-qnn.sh
+++ b/tests/ggml-qnn/build-ggml-qnn.sh
@@ -3,7 +3,7 @@
 set -e
 
 #modify following lines to adapt to local dev envs
-PROJECT_ROOT_PATH=~/github/llama.cpp/
+LLAMACPP_ROOT_PATH=~/github/llama.cpp/
 #https://qpm.qualcomm.com/#/main/tools/details/qualcomm_ai_engine_direct
 #https://developer.qualcomm.com/software/hexagon-dsp-sdk/tools
 QNN_SDK_PATH=/opt/qcom/aistack/qnn/2.20.0.240223/
@@ -61,7 +61,7 @@ function check_and_download_ndk()
 
 function build_arm64
 {
-    cmake -H. -B./out/arm64-v8a -DPROJECT_ROOT_PATH=${PROJECT_ROOT_PATH} -DTARGET_NAME=${TARGET} -DCMAKE_BUILD_TYPE=${PROJECT_BUILD_TYPE} -DANDROID_ABI=arm64-v8a -DANDROID_PLATFORM=${ANDROID_PLATFORM} -DANDROID_NDK=${ANDROID_NDK}  -DCMAKE_TOOLCHAIN_FILE=${ANDROID_NDK}/build/cmake/android.toolchain.cmake -DQNN_SDK_PATH=${QNN_SDK_PATH}
+    cmake -H. -B./out/arm64-v8a -DPROJECT_ROOT_PATH=${LLAMACPP_ROOT_PATH} -DTARGET_NAME=${TARGET} -DCMAKE_BUILD_TYPE=${PROJECT_BUILD_TYPE} -DANDROID_ABI=arm64-v8a -DANDROID_PLATFORM=${ANDROID_PLATFORM} -DANDROID_NDK=${ANDROID_NDK}  -DCMAKE_TOOLCHAIN_FILE=${ANDROID_NDK}/build/cmake/android.toolchain.cmake -DQNN_SDK_PATH=${QNN_SDK_PATH}
 
     cd ./out/arm64-v8a
     make
diff --git a/tests/ggml-qnn/run-ggml-qnn.sh b/tests/ggml-qnn/run-ggml-qnn.sh
index ea68aecb4f9424..ff5e2292108c0f 100755
--- a/tests/ggml-qnn/run-ggml-qnn.sh
+++ b/tests/ggml-qnn/run-ggml-qnn.sh
@@ -7,16 +7,22 @@ GGML_QNN_TEST=ggml-qnn-test
 REMOTE_PATH=/data/local/tmp/
 
 adb push ${GGML_QNN_TEST} ${REMOTE_PATH}
-adb push ${QNN_SDK_PATH}/lib/aarch64-android/libQnnSystem.so ${REMOTE_PATH}/
-adb push ${QNN_SDK_PATH}/lib/aarch64-android/libQnnCpu.so ${REMOTE_PATH}/
-adb push ${QNN_SDK_PATH}/lib/aarch64-android/libQnnGpu.so ${REMOTE_PATH}/
 
-#the QNN HTP(aka DSP) backend only verified on Xiaomi14(Qualcomm SM8650-AB Snapdragon 8 Gen 3) successfully
-adb push ${QNN_SDK_PATH}/lib/aarch64-android/libQnnHtp.so ${REMOTE_PATH}/
-adb push ${QNN_SDK_PATH}/lib/aarch64-android/libQnnHtpNetRunExtensions.so ${REMOTE_PATH}/
-adb push ${QNN_SDK_PATH}/lib/aarch64-android/libQnnHtpPrepare.so ${REMOTE_PATH}/
-adb push ${QNN_SDK_PATH}/lib/aarch64-android/libQnnHtpV75Stub.so ${REMOTE_PATH}/
-adb push ${QNN_SDK_PATH}/lib/hexagon-v75/unsigned/libQnnHtpV75Skel.so ${REMOTE_PATH}/
+adb shell ls ${REMOTE_PATH}/libQnnCpu.so
+if [ $? -eq 0 ]; then
+    printf "QNN libs already exist\n"
+else
+    adb push ${QNN_SDK_PATH}/lib/aarch64-android/libQnnSystem.so              ${REMOTE_PATH}/
+    adb push ${QNN_SDK_PATH}/lib/aarch64-android/libQnnCpu.so                 ${REMOTE_PATH}/
+    adb push ${QNN_SDK_PATH}/lib/aarch64-android/libQnnGpu.so                 ${REMOTE_PATH}/
+
+    #the QNN HTP(aka DSP) backend only verified on Xiaomi14(Qualcomm SM8650-AB Snapdragon 8 Gen 3) successfully
+    adb push ${QNN_SDK_PATH}/lib/aarch64-android/libQnnHtp.so                 ${REMOTE_PATH}/
+    adb push ${QNN_SDK_PATH}/lib/aarch64-android/libQnnHtpNetRunExtensions.so ${REMOTE_PATH}/
+    adb push ${QNN_SDK_PATH}/lib/aarch64-android/libQnnHtpPrepare.so          ${REMOTE_PATH}/
+    adb push ${QNN_SDK_PATH}/lib/aarch64-android/libQnnHtpV75Stub.so          ${REMOTE_PATH}/
+    adb push ${QNN_SDK_PATH}/lib/hexagon-v75/unsigned/libQnnHtpV75Skel.so     ${REMOTE_PATH}/
+fi
 
 adb shell chmod +x /data/local/tmp/${GGML_QNN_TEST}
 adb shell /data/local/tmp/${GGML_QNN_TEST}