diff --git a/fluid/PaddleCV/object_detection/main_quant.py b/fluid/PaddleCV/object_detection/main_quant.py
index 0fde0a78b7c99fb2fe6c5facff75c3300ddc00ab..bd7d377e69e95dcaf066a40941cf48091583e7ab 100644
--- a/fluid/PaddleCV/object_detection/main_quant.py
+++ b/fluid/PaddleCV/object_detection/main_quant.py
@@ -5,6 +5,7 @@ import argparse
 import functools
 import shutil
 import math
+import multiprocessing
 
 import paddle
 import paddle.fluid as fluid
@@ -127,7 +128,7 @@ def train(args,
 
     if parallel:
         train_exe = fluid.ParallelExecutor(main_program=train_prog,
-            use_cuda=use_gpu, loss_name=loss.name)
+            use_cuda=True if use_gpu else False, loss_name=loss.name)
 
     train_reader = reader.train(data_args,
                                 train_file_list,