diff --git a/docs/user_guides/source_compile.md b/docs/user_guides/source_compile.md
index 127d295eed4ba05433b0fe7ff237644c1a9a3151..00c7329d84316fc6feb603a84e44b67ff67e1959 100644
--- a/docs/user_guides/source_compile.md
+++ b/docs/user_guides/source_compile.md
@@ -156,7 +156,7 @@ wget -c https://mms-res.cdn.bcebos.com/cmake-3.10.3-Linux-x86_64.tar.gz && \
 
 ###### 编译环境要求
 
-- gcc、g++、git、make、wget、python、patchelf
+- gcc、g++、git、make、wget、python、pip、python-dev、patchelf
 - cmake（建议使用3.10或以上版本）
 
 ###### 具体步骤
@@ -167,7 +167,7 @@ wget -c https://mms-res.cdn.bcebos.com/cmake-3.10.3-Linux-x86_64.tar.gz && \
 # 1. Install basic software
 apt update
 apt-get install -y --no-install-recomends \
-  gcc g++ make wget python unzip
+  gcc g++ make wget python unzip patchelf python-dev
 
 # 2. install cmake 3.10 or above
 wget https://www.cmake.org/files/v3.10/cmake-3.10.3.tar.gz
diff --git a/lite/utils/cv/paddle_image_preprocess.cc b/lite/utils/cv/paddle_image_preprocess.cc
index 725a5399b3922243ec40e28958f54009bf5f1e9c..3ec82c0d16e013a864491380d4980ad736e2b31a 100644
--- a/lite/utils/cv/paddle_image_preprocess.cc
+++ b/lite/utils/cv/paddle_image_preprocess.cc
@@ -14,6 +14,7 @@
 
 #include "lite/utils/cv/paddle_image_preprocess.h"
 #include <math.h>
+#include <string.h>
 #include <algorithm>
 #include <climits>
 #include "lite/utils/cv/image2tensor.h"