diff --git a/PaddleNLP/similarity_net/run_classifier.py b/PaddleNLP/similarity_net/run_classifier.py
index 727aa5554104bc25803b7e4b3b489ebdcf02259b..4413c24c6722b2703dd6f758a2febd8924857dae 100644
--- a/PaddleNLP/similarity_net/run_classifier.py
+++ b/PaddleNLP/similarity_net/run_classifier.py
@@ -17,6 +17,7 @@ sys.path.append("..")
 import paddle
 import paddle.fluid as fluid
 import numpy as np
+import codecs
 import config
 import utils
 import reader
@@ -326,7 +327,7 @@ def test(conf_dict, args):
     simnet_process = reader.SimNetProcessor(args, vocab)
     # load auc method
     metric = fluid.metrics.Auc(name="auc")
-    with open("predictions.txt", "w") as predictions_file:
+    with codecs.open("predictions.txt", "w", "utf-8") as predictions_file:
         # Get model path
         model_path = args.init_checkpoint
         # Get device
@@ -430,7 +431,7 @@ def infer(args):
                 map(lambda item: str((item[0] + 1) / 2), output[1]))
         else:
             preds_list += map(lambda item: str(np.argmax(item)), output[1])
-    with open(args.infer_result_path, "w") as infer_file:
+    with codecs.open(args.infer_result_path, "w", "utf-8") as infer_file:
         for _data, _pred in zip(simnet_process.get_infer_data(), preds_list):
             infer_file.write(_data + "\t" + _pred + "\n")
     logging.info("infer result saved in %s" %