diff --git a/modelcenter/PP-HelixFold/introduction_cn.ipynb b/modelcenter/PP-HelixFold/introduction_cn.ipynb
index 5c9d2b2b9c0de3bfb49272de9d105730aa2a5226..dde5d1c22f39efeb102ea7e787309ee49b086871 100644
--- a/modelcenter/PP-HelixFold/introduction_cn.ipynb
+++ b/modelcenter/PP-HelixFold/introduction_cn.ipynb
@@ -39,7 +39,7 @@
     "- nccl: 2.12.12\n",
     "\n",
     "\n",
-    "## 4. 模型如何使用\n",
+    "## 5. 模型如何使用\n",
     "\n",
     "### 安装\n",
     "\n",
@@ -166,7 +166,7 @@
     "注意：运行demo蛋白T1026和T1037，您无需下载庞大的数据库，仅需下载预训练模型参数即可使用。\n",
     "\n",
     "\n",
-    "## 5. 相关论文以及引用信息\n",
+    "## 6. 相关论文以及引用信息\n",
     "\n",
     "如果您使用了该代码库里的任何代码和数据，请引用：\n",
     "\n",