From c0d4ef6c13e2b9587db74d034c341ee6ad7ebd38 Mon Sep 17 00:00:00 2001
From: Dong Daxiang <35550832+guru4elephant@users.noreply.github.com>
Date: Fri, 20 Mar 2020 23:14:52 +0800
Subject: [PATCH] Update DESIGN_DOC.md

---
 doc/DESIGN_DOC.md | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/doc/DESIGN_DOC.md b/doc/DESIGN_DOC.md
index 9cdbe210..bf2a1f0e 100644
--- a/doc/DESIGN_DOC.md
+++ b/doc/DESIGN_DOC.md
@@ -83,4 +83,12 @@ Paddle Serving的核心执行引擎是一个有向无环图，图中的每个节
 ### 3.2 模型管理、在线A/B流量测试、模型热加载
 
 ## 4. 用户类型
+<p align="center">
+    <br>
+<img src='user_groups.png' width = "300" height = "430">
+  
+<img src='coding_mode.png' width = "200" height = "430">
+    <br>
+<p>
+
 
-- 
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