diff --git a/chapter1/4_cifar10_tutorial.ipynb b/chapter1/4_cifar10_tutorial.ipynb
index 63555159..b855fe86 100644
--- a/chapter1/4_cifar10_tutorial.ipynb
+++ b/chapter1/4_cifar10_tutorial.ipynb
@@ -60,7 +60,7 @@
     "\n",
     "\n",
     "1. 读取和归一化 CIFAR10\n",
-    "________________________\n",
+    "------------------------------\n",
     "\n",
     "使用``torchvision``可以非常容易的加载CIFAR10。\n"
    ]
@@ -187,7 +187,7 @@
    "source": [
     "\n",
     "2. 定义一个卷积神经网络\n",
-    "\n",
+    "-------------------------------\n",
     "从之前的神经网络一节复制神经网络代码,并修改为输入3通道图像\n"
    ]
   },