diff --git a/test/src/specs/sync/ibd_process.rs b/test/src/specs/sync/ibd_process.rs
index a5176c9dca7..206f0da2397 100644
--- a/test/src/specs/sync/ibd_process.rs
+++ b/test/src/specs/sync/ibd_process.rs
@@ -138,18 +138,9 @@ impl Spec for IBDProcessWithWhiteList {
             panic!("refuse to connect fail");
         }
 
-        node6.disconnect(node0);
-
-        // Make sure both sides are disconnected
-        let is_disconnect_already = wait_until(10, || {
-            let peers = rpc_client0.get_peers();
-            peers.iter().any(|peer| peer.node_id == node6.node_id())
-        });
-
-        if is_disconnect_already {
-            panic!("node6 can't disconnect with node0");
-        }
-
+        // After the whitelist is disconnected, it will always try to reconnect.
+        // In order to ensure that the node6 has already generated two blocks when reconnecting,
+        // it must be in the connected state, and then disconnected.
         node6.generate_blocks(2);
 
         let generate_res = wait_until(10, || net.nodes[6].get_tip_block_number() == 2);
@@ -158,6 +149,10 @@ impl Spec for IBDProcessWithWhiteList {
             panic!("node6 can't generate blocks to 2");
         }
 
+        // Although the disconnection of the whitelist is automatically reconnected for node0,
+        // the disconnect operation is still needed here to instantly refresh the state of node6 in node0.
+        node6.disconnect(node0);
+
         // Make sure node0 re-connect with node6
         node0.connect(node6);