diff --git a/paddle/scripts/paddle_docker_build.sh b/paddle/scripts/paddle_docker_build.sh
index ddae9f19a21b404c9b24b47d433e07db4603dc8b..0bf8c7989245e7b0119c41960f792a97d1555b9c 100755
--- a/paddle/scripts/paddle_docker_build.sh
+++ b/paddle/scripts/paddle_docker_build.sh
@@ -32,7 +32,7 @@ function start_build_docker() {
     DOCKER_ENV=$(cat <<EOL
         -e FLAGS_fraction_of_gpu_memory_to_use=0.15 \
         -e CTEST_OUTPUT_ON_FAILURE=1 \
-        -e CTEST_PARALLEL_LEVEL=5 \
+        -e CTEST_PARALLEL_LEVEL=1 \
         -e APT_MIRROR=${apt_mirror} \
         -e WITH_GPU=ON \
         -e CUDA_ARCH_NAME=Auto \