diff --git a/README.md b/README.md
index 31f4a94b0..f511943ca 100755
--- a/README.md
+++ b/README.md
@@ -24,6 +24,31 @@ SRS is licenced under [MIT](https://github.com/ossrs/srs/blob/develop/LICENSE) o
 and note that [MulanPSL-2.0 is compatible with Apache-2.0](https://www.apache.org/legal/resolved.html#category-a),
 but some third-party libraries are distributed using their [own licenses](https://github.com/ossrs/srs/wiki/LicenseMixing).
 
+```mermaid
+flowchart LR;
+    subgraph rtc[WebRTC Clients]
+        direction LR;
+        H5[Chrome/Firefox<br/>/Edge/Safari etc];
+        Native[iOS/Android];
+    end
+    subgraph live[Live Streaming Clients]
+        direction LR;
+        encoder[FFmpeg/OBS <br/> Encoders];
+        player[H5/VLC/ffplay <br/> Players];
+    end
+    subgraph origin[SRS 4.0 Overview <br/> Single Node ]
+        direction TB;
+        srs[SRS 4.0 Origin <br/> Server];
+    end
+    srs --WebRTC--- rtc;
+    srs --RTMP/SRT--- encoder;
+    srs --HLS/FLV/RTMP/SRT---> player;
+    srs --CloudStorage<br/>HLS/DASH/HDS---> player;
+    srs --VoD System<br/>DVR FLV/MP4---> player;
+```
+
+> Note: The single node architecture for SRS, generally and major use scenario.
+
 [![SRS Overview](https://ossrs.net/wiki/images/SRS-Overview-4.0.png)](https://ossrs.net/wiki/images/SRS-Overview-4.0.png)
 
 > Note: If image load fail, please see it at [here](https://www.processon.com/view/link/619f29791efad425fd699fd2).