diff --git a/mindspore/train/serialization.py b/mindspore/train/serialization.py
index c4d35b4c80..5220f4a8fd 100644
--- a/mindspore/train/serialization.py
+++ b/mindspore/train/serialization.py
@@ -501,6 +501,7 @@ def export(net, *inputs, file_name, file_format='AIR', **kwargs):
         inputs (Tensor): Inputs of the `net`.
         file_name (str): File name of the model to be exported.
         file_format (str): MindSpore currently supports 'AIR', 'ONNX' and 'MINDIR' format for exported model.
+
             - AIR: Ascend Intermidiate Representation. An intermidiate representation format of Ascend model.
               Recommended suffix for output file is '.air'.
             - ONNX: Open Neural Network eXchange. An open format built to represent machine learning models.
@@ -508,7 +509,9 @@ def export(net, *inputs, file_name, file_format='AIR', **kwargs):
             - MINDIR: MindSpore Native Intermidiate Representation for Anf. An intermidiate representation format
               for MindSpore models.
               Recommended suffix for output file is '.mindir'.
+
         kwargs (dict): Configuration options dictionary.
+
             - quant_mode: The mode of quant.
             - mean: Input data mean. Default: 127.5.
             - std_dev: Input data variance. Default: 127.5.