diff --git a/doc/getstarted/build_and_install/build_from_source_cn.rst b/doc/getstarted/build_and_install/build_from_source_cn.rst
index 41ac07ca5674d2c121baba77c58226ad328cd681..1e75087462ba4fc749037b63cfb367056274e0b9 100644
--- a/doc/getstarted/build_and_install/build_from_source_cn.rst
+++ b/doc/getstarted/build_and_install/build_from_source_cn.rst
@@ -32,6 +32,11 @@ PaddlePaddle主要使用 `CMake <https://cmake.org>`_ 以及GCC, G++作为编译
 
    pip install build/python/dist/*.whl
 
+如果机器中已经安装过PaddlePaddle，请卸载再安装：
+
+.. code-block:: bash
+
+   pip install build/python/dist/*.whl -U
 
 .. _run_test:
 
diff --git a/doc/getstarted/build_and_install/build_from_source_en.rst b/doc/getstarted/build_and_install/build_from_source_en.rst
index 92211aee8c3bc0ae6e1a38311d40ddf92117cac7..fde8a18daa2ad1e0c6b77b32eff4e3a4ce2416fc 100644
--- a/doc/getstarted/build_and_install/build_from_source_en.rst
+++ b/doc/getstarted/build_and_install/build_from_source_en.rst
@@ -36,6 +36,11 @@ machine or copy it to the target machine.
 
    pip install build/python/dist/*.whl
 
+If the machine has installed PaddlePaddle before, please uninstall it first and reinstall it again.
+
+.. code-block:: bash
+
+   pip install build/python/dist/*.whl -U
 
 .. _run_test: