diff --git a/paddle/scripts/paddle_build.sh b/paddle/scripts/paddle_build.sh
index cdc8e3e91adbfdcbed24fc7672a27bf2176c8488..6eabaa1d154128c6cf59fb0aab443b58db2bb251 100755
--- a/paddle/scripts/paddle_build.sh
+++ b/paddle/scripts/paddle_build.sh
@@ -51,6 +51,7 @@ function init() {
     NONE='\033[0m'
 
     PADDLE_ROOT="$( cd "$( dirname "${BASH_SOURCE[0]}")/../../" && pwd )"
+    export PADDLE_ROOT
     if [ -z "${SCRIPT_NAME}" ]; then
         SCRIPT_NAME=$0
     fi