diff --git a/PaddleNLP/similarity_net/run_classifier.py b/PaddleNLP/similarity_net/run_classifier.py
index 4413c24c6722b2703dd6f758a2febd8924857dae..219f02cb055149872405929ea9ed8271502586a3 100644
--- a/PaddleNLP/similarity_net/run_classifier.py
+++ b/PaddleNLP/similarity_net/run_classifier.py
@@ -317,6 +317,28 @@ def train(conf_dict, args):
         else:
             test_auc = test_result
             logging.info("AUC of test is %f" % test_auc)
+           
+          
+    if args.output_dir is not None:
+        model_save_dir = os.path.join(args.output_dir,
+                                              conf_dict["model_path"])
+        model_path = os.path.join(model_save_dir, args.task_name)
+
+        if not os.path.exists(model_save_dir):
+            os.makedirs(model_save_dir)
+        if args.task_mode == "pairwise":
+            feed_var_names = [left.name, pos_right.name]
+            target_vars = [left_feat, pos_score]
+        else:
+            feed_var_names = [
+                left.name,
+                right.name,
+            ]
+            target_vars = [left_feat, pred]
+        fluid.io.save_inference_model(model_path, feed_var_names,
+                                      target_vars, executor,
+                                      infer_program)
+        logging.info("saving infer model in %s" % model_path)
 
 
 def test(conf_dict, args):