diff --git a/README.md b/README.md
index ee07501..953a816 100644
--- a/README.md
+++ b/README.md
@@ -187,9 +187,9 @@ CS231n (斯坦福计算机视觉课程): [website](https://cs231n.stanford.edu/s
   * Nerf原理代码讲解: [bilibili](https://www.bilibili.com/video/BV1CC411V7oq/?spm_id_from=333.337.search-card.all.click&vd_source=930ef08bfb2ff0db87ec20bf72a99855)
   * 3DGS原理代码讲解: [bilibili](https://www.bilibili.com/video/BV1zi421v7Dr?spm_id_from=333.788.recommend_more_video.-1&vd_source=930ef08bfb2ff0db87ec20bf72a99855)
 * 三维预训练最新综述:
-  * Advances in 3D pre-training and downstream tasks: a survey. [PDF](https://link.springer.com/content/pdf/10.1007/s44336-024-00007-4.pdf)<br>
+  * Advances in 3D pre-training and downstream tasks: a survey: [PDF](https://link.springer.com/content/pdf/10.1007/s44336-024-00007-4.pdf)<br>
 * 3DGS在具身上的综述:
-  * 3D Gaussian Splatting in Robotics: A Survey. [PDF](https://arxiv.org/pdf/2410.12262v2)<br>
+  * 3D Gaussian Splatting in Robotics: A Survey: [PDF](https://arxiv.org/pdf/2410.12262v2)<br>
 
 
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