diff --git a/_config.yml b/_config.yml
index c7ba2f0..efaa1b9 100644
--- a/_config.yml
+++ b/_config.yml
@@ -99,11 +99,12 @@ theme_mode: # [light | dark]
 cdn: "https://chirpy-img.netlify.app"
 
 # the avatar on sidebar, support local or CORS resources
-avatar: "/assets/img/mrj9tyfxgpwc4ohkdhkq3uu3azxww8g.png"
+avatar: "assets/img/avatar.png"
 
 # The URL of the site-wide social preview image used in SEO `og:image` meta tag.
 # It can be overridden by a customized `page.image` in front matter.
-social_preview_image: # string, local or CORS resources
+social_preview_image:  "https://cdn.jsdelivr.net/gh/cmgzn/cmgzn.github.io@main/assets/img/avatar.png"
+# string, local or CORS resources
 
 # boolean type, the global switch for TOC in posts.
 toc: true
diff --git a/assets/img/mrj9tyfxgpwc4ohkdhkq3uu3azxww8g.png b/assets/img/avatar.png
similarity index 100%
rename from assets/img/mrj9tyfxgpwc4ohkdhkq3uu3azxww8g.png
rename to assets/img/avatar.png