diff --git a/benchmark/paddle/image/run_openblas_train.sh b/benchmark/paddle/image/run_openblas_train.sh
index e9df83fee2a3f796b7234b39619364f6ee4d5dc9..d82c8384e06bc9e82b69c277a6dfdec64fadceb7 100755
--- a/benchmark/paddle/image/run_openblas_train.sh
+++ b/benchmark/paddle/image/run_openblas_train.sh
@@ -2,6 +2,7 @@ set -e
 
 function train() {
   unset OMP_NUM_THREADS MKL_NUM_THREADS OMP_DYNAMIC KMP_AFFINITY
+  export OPENBLAS_NUM_THREADS=1
   topology=$1
   layer_num=$2
   bs=$3