diff --git a/README.md b/README.md
index 5a18975..fec161b 100644
--- a/README.md
+++ b/README.md
@@ -41,12 +41,11 @@
 <br/><br/>
 
 <h2 align="center">📄 Technical Document</h2>
-
 <div align="center">
 <table>
   <tr>
     <td align="center">
-      <a href="docs/BioClaw_Technical_Document.pdf">
+      <a href="https://www.biorxiv.org/content/10.64898/2026.04.11.716807v1">
         <img src="docs/images/tech_doc_card.png" width="650" alt="BioClaw Technical Document"/>
         <br/><br/>
         <img src="https://img.shields.io/badge/Download-Technical_Document_PDF-2b6cb0?style=for-the-badge&logo=adobeacrobatreader&logoColor=white" height="50" alt="Download PDF"/>
diff --git a/README.zh-CN.md b/README.zh-CN.md
index 31fdbc2..b7f1fed 100644
--- a/README.zh-CN.md
+++ b/README.zh-CN.md
@@ -40,12 +40,11 @@
 <br/><br/>
 
 <h2 align="center">📄 技术文档</h2>
-
 <div align="center">
 <table>
   <tr>
     <td align="center">
-      <a href="docs/BioClaw_Technical_Document.pdf">
+      <a href="https://www.biorxiv.org/content/10.64898/2026.04.11.716807v1">
         <img src="docs/images/tech_doc_card.png" width="650" alt="BioClaw 技术文档"/>
         <br/><br/>
         <img src="https://img.shields.io/badge/下载-技术文档_PDF-2b6cb0?style=for-the-badge&logo=adobeacrobatreader&logoColor=white" height="50" alt="下载 PDF"/>
diff --git a/docs/BioClaw_Technical_Document.pdf b/docs/BioClaw_Technical_Document.pdf
index 47b2606..b561880 100644
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diff --git a/docs/images/tech_doc_card.png b/docs/images/tech_doc_card.png
index ad4289a..f2555d5 100644
Binary files a/docs/images/tech_doc_card.png and b/docs/images/tech_doc_card.png differ