diff --git a/TOC-best-practices.md b/TOC-best-practices.md
index 6dbc1096992cd..a248b23d18886 100644
--- a/TOC-best-practices.md
+++ b/TOC-best-practices.md
@@ -1,17 +1,22 @@
 <!-- markdownlint-disable MD007 -->
 <!-- markdownlint-disable MD041 -->
 
-- [Use TiDB](/best-practices/tidb-best-practices.md)
-- [Manage DDL](/best-practices/ddl-introduction.md)
-- [Optimize Multi-Column Indexes](/best-practices/multi-column-index-best-practices.md)
-- [Manage Indexes and Identify Unused Indexes](/best-practices/index-management-best-practices.md)
-- [Handle Millions of Tables in SaaS Multi-Tenant Scenarios](/best-practices/saas-best-practices.md)
-- [Use UUIDs as Primary Keys](/best-practices/uuid.md)
-- [Handle High-Concurrency Writes](/best-practices/high-concurrency-best-practices.md)
-- [Tune TiKV Performance with Massive Regions](/best-practices/massive-regions-best-practices.md)
-- [Tune PD Scheduling](/best-practices/pd-scheduling-best-practices.md)
-- [Use Read-Only Storage Nodes](/best-practices/readonly-nodes.md)
-- [Use HAProxy for Load Balancing](/best-practices/haproxy-best-practices.md)
-- [Monitor TiDB Using Grafana](/best-practices/grafana-monitor-best-practices.md)
-- [Three-Node Hybrid Deployment](/best-practices/three-nodes-hybrid-deployment.md)
-- [Local Reads in Three-Data-Center Deployments](/best-practices/three-dc-local-read.md)
+- Overview
+  - [Use TiDB](/best-practices/tidb-best-practices.md)
+- Schema Design
+  - [Manage DDL](/best-practices/ddl-introduction.md)
+  - [Use UUIDs as Primary Keys](/best-practices/uuid.md)
+  - [Optimize Multi-Column Indexes](/best-practices/multi-column-index-best-practices.md)
+  - [Manage Indexes and Identify Unused Indexes](/best-practices/index-management-best-practices.md)
+- Deployment
+  - [Three-Node Hybrid Deployment](/best-practices/three-nodes-hybrid-deployment.md)
+  - [Local Reads in Three-Data-Center Deployments](/best-practices/three-dc-local-read.md)
+- Operations
+  - [Use HAProxy for Load Balancing](/best-practices/haproxy-best-practices.md)
+  - [Use Read-Only Storage Nodes](/best-practices/readonly-nodes.md)
+  - [Monitor TiDB Using Grafana](/best-practices/grafana-monitor-best-practices.md)
+- Performance Tuning
+  - [Tune TiKV Performance with Massive Regions](/best-practices/massive-regions-best-practices.md)
+  - [Tune PD Scheduling](/best-practices/pd-scheduling-best-practices.md)
+  - [Handle Millions of Tables in SaaS Multi-Tenant Scenarios](/best-practices/saas-best-practices.md)
+  - [Handle High-Concurrency Writes](/best-practices/high-concurrency-best-practices.md)