diff --git a/docs/guidance/preparation.md b/docs/guidance/preparation.md
index dc7f766a..525f619b 100644
--- a/docs/guidance/preparation.md
+++ b/docs/guidance/preparation.md
@@ -27,5 +27,11 @@ There are two archive files in the drive: **checkpoints.zip** and **arcface_chec
 [[Google Drive]](https://drive.google.com/drive/folders/1jV6_0FIMPC53FZ2HzZNJZGMe55bbu17R?usp=sharing)
 [[Baidu Drive]](https://pan.baidu.com/s/1wFV11RVZMHqd-ky4YpLdcA) Password: ```jd2v```
 
+**Simswap 512 (optional)**
+
+The checkpoint of **Simswap 512 beta version** has been uploaded in [Github release](https://github.com/neuralchen/SimSwap/releases/download/512_beta/512.zip).If you want to experience Simswap 512, feel free to try.
+- **Unzip 512.zip, place it in the root dir ./checkpoints**.
+
+
 ### Note
 We expect users to have GPU with at least 3G memory. For those who do not, we provide [[Colab Notebook implementation]](https://colab.research.google.com/github/neuralchen/SimSwap/blob/main/SimSwap%20colab.ipynb).