diff --git a/plugins/php/versions/74/install.sh b/plugins/php/versions/74/install.sh
index 0523889bc..1f1a860e5 100755
--- a/plugins/php/versions/74/install.sh
+++ b/plugins/php/versions/74/install.sh
@@ -54,6 +54,16 @@ if [ ! -d $sourcePath/php/php${PHP_VER} ];then
 	if [ ! -f $sourcePath/php/php-${version}.tar.xz ];then
 		wget --no-check-certificate -O $sourcePath/php/php-${version}.tar.xz https://museum.php.net/php7/php-${version}.tar.xz
 	fi
+
+	#检测文件是否损坏.
+	md5_file_ok=0cbaae3de6c02cf8d7b82843fdfdf53d
+	if [ -f $sourcePath/php/php-${version}.tar.xz ];then
+		md5_file=`md5sum $sourcePath/php/php-${version}.tar.xz  | awk '{print $1}'`
+		if [ "${md5_file}" != "${md5_file_ok}" ]; then
+			echo "PHP${version} 下载文件不完整,重新安装"
+			rm -rf $sourcePath/php/php-${version}.tar.xz
+		fi
+	fi
 	
 	cd $sourcePath/php && tar -Jxf $sourcePath/php/php-${version}.tar.xz
 	mv $sourcePath/php/php-${version} $sourcePath/php/php${PHP_VER}