diff --git a/text_classification/README.md b/text_classification/README.md
index e3ff84cfbba44761b808779fdcfce41efcc7fd43..48c35eacb11564f5ba3f867ccca661117de31523 100644
--- a/text_classification/README.md
+++ b/text_classification/README.md
@@ -7,6 +7,6 @@
 ## DNN模型结构
 DNN的模型结构入下图所示：
 <p align="center">
-<img src="images/dnn_net.png" width = "80%" align="center"/><br/>
+<img src="images/dnn_net.png" width = "100%" align="center"/><br/>
 图1. DNN文本分类模型
 </p>