diff --git a/docs-2.0/4.deployment-and-installation/2.compile-and-install-nebula-graph/deploy-nebula-graph-cluster.md b/docs-2.0/4.deployment-and-installation/2.compile-and-install-nebula-graph/deploy-nebula-graph-cluster.md
index 2e178646cae..638ed89eb77 100644
--- a/docs-2.0/4.deployment-and-installation/2.compile-and-install-nebula-graph/deploy-nebula-graph-cluster.md
+++ b/docs-2.0/4.deployment-and-installation/2.compile-and-install-nebula-graph/deploy-nebula-graph-cluster.md
@@ -14,7 +14,8 @@ For now, Nebula Graph does not provide an official deployment tool. Users can de
 
 ## Prerequisites
 
-Prepare 5 machines for deploying the cluster.
+- Prepare 5 machines for deploying the cluster.
+- Use the NTP service to synchronize time in the cluster.
 
 ## Manual deployment process