diff --git a/sync-diff-inspector/sync-diff-inspector-overview.md b/sync-diff-inspector/sync-diff-inspector-overview.md
index 15c2c8e155240..4a00e0f7e49a2 100644
--- a/sync-diff-inspector/sync-diff-inspector-overview.md
+++ b/sync-diff-inspector/sync-diff-inspector-overview.md
@@ -72,6 +72,9 @@ check-thread-count = 4
 # If enabled, SQL statements is exported to fix inconsistent tables.
 export-fix-sql = true
 
+# Only compares the data instead of the table structure. This configuration item is an experimental feature. It is not recommended that you use it in the production environment.
+check-data-only = false
+
 # Only compares the table structure instead of the data.
 check-struct-only = false