diff --git a/src/main/java/org/tron/common/overlay/discover/NodeStatistics.java b/src/main/java/org/tron/common/overlay/discover/NodeStatistics.java
index ca2cfbb384a..294003c7aae 100644
--- a/src/main/java/org/tron/common/overlay/discover/NodeStatistics.java
+++ b/src/main/java/org/tron/common/overlay/discover/NodeStatistics.java
@@ -117,7 +117,9 @@ private int getSessionFairReputation() {
         }
       }
     }
-    int score = discoverReput + 10 * reput - disconnectTimes * 20;
+    int score =
+        discoverReput + 10 * reput - (int) Math.pow(2, disconnectTimes) * (disconnectTimes > 0 ? 10
+            : 0);
     return score > 0 ? score : 0;
   }
 
@@ -193,13 +195,15 @@ public boolean isPenalized() {
   public void nodeDisconnectedRemote(ReasonCode reason) {
     lastDisconnectedTime = System.currentTimeMillis();
     tronLastRemoteDisconnectReason = reason;
-    disconnectTimes++;
-    persistedReputation = persistedReputation / 2;
   }
 
   public void nodeDisconnectedLocal(ReasonCode reason) {
     lastDisconnectedTime = System.currentTimeMillis();
     tronLastLocalDisconnectReason = reason;
+  }
+
+  public void notifyDisconnect() {
+    lastDisconnectedTime = System.currentTimeMillis();
     disconnectTimes++;
     persistedReputation = persistedReputation / 2;
   }
diff --git a/src/main/java/org/tron/common/overlay/server/ChannelManager.java b/src/main/java/org/tron/common/overlay/server/ChannelManager.java
index 6ee3b78f323..04805421cc9 100644
--- a/src/main/java/org/tron/common/overlay/server/ChannelManager.java
+++ b/src/main/java/org/tron/common/overlay/server/ChannelManager.java
@@ -150,6 +150,7 @@ public void notifyDisconnect(Channel channel) {
         || channel.getChannelHandlerContext().channel() == null) {
       return;
     }
+    channel.getNodeStatistics().notifyDisconnect();
     InetSocketAddress socketAddress = (InetSocketAddress) channel.getChannelHandlerContext()
         .channel().remoteAddress();
     recentlyDisconnected.put(socketAddress.getAddress(), new Date());
diff --git a/src/main/java/org/tron/common/overlay/server/SyncPool.java b/src/main/java/org/tron/common/overlay/server/SyncPool.java
index b074138e854..404ad071fdd 100644
--- a/src/main/java/org/tron/common/overlay/server/SyncPool.java
+++ b/src/main/java/org/tron/common/overlay/server/SyncPool.java
@@ -206,10 +206,6 @@ public boolean test(NodeHandler handler) {
       if (handler.getNodeStatistics().getReputation() < 100) {
         return false;
       }
-      
-      if (handler.getNodeStatistics().isPenalized()) {
-        return false;
-      }
 
       return  true;
     }