diff --git a/README.en.md b/README.en.md
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+++ b/README.en.md
@@ -6,6 +6,10 @@ English | [简体中文](./README.md)
 
 > **Companion project**: This repository is the semantic-model companion to the [Codata](https://github.com/Mlilion/Codata) project, focused on semantic modeling, release snapshots, and trusted querying over MCP. See [Mlilion/Codata](https://github.com/Mlilion/Codata) for the platform and agent capabilities.
 
+## Online Demo
+
+The demo URL and demo credentials are shared in the community group. Scan the QR code in [Contact](#contact) to join and request access. If the group QR code has expired, add the author on WeChat for an invitation.
+
 ## Positioning
 
 CodataAdmin is not an admin template. Its core is the **semantic model**. It answers three questions:
diff --git a/README.md b/README.md
index 5db5247..c8295ed 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,10 @@
 
 > **配套项目**：本仓库是 [Codata](https://github.com/Mlilion/Codata) 项目的配套语义模型项目，专注语义建模、发布快照与 MCP 可信取数；平台与 Agent 能力请见 [Mlilion/Codata](https://github.com/Mlilion/Codata)。
 
+## 在线体验 Demo
+
+在线体验地址及体验账号在交流群内提供，请前往[联系方式](#联系方式)扫码进群获取。若群二维码已过期，可添加作者微信，由作者邀请入群。
+
 ## 项目定位
 
 CodataAdmin 的核心不是后台管理，而是**语义模型**。它要回答三个问题：