diff --git a/assets/Script/sync/ArrayReplicator.ts b/assets/Script/sync/ArrayReplicator.ts
index 6afc139..9c988c1 100644
--- a/assets/Script/sync/ArrayReplicator.ts
+++ b/assets/Script/sync/ArrayReplicator.ts
@@ -275,9 +275,8 @@ export class ArrayReplicator<T> implements IReplicator {
                 } else {
                     let data: IReplicator = this.data[i].data;
                     // 如果由于数组的插入与删除，导致对象下标变化，则需要重新绑定
-                    if (this.data[i].index != i) {
+                    if (data.getTarget() != this.target[i]) {
                         data.setTarget(this.target[i]);
-                        this.data[i].index = i;
                     }
                     let diff = data.genDiff(fromVersion, toVersion);
                     // 如果不是新插入的，则需要有diff才进入ret
@@ -356,9 +355,9 @@ export class ArrayReplicator<T> implements IReplicator {
 export function TestArrayReplicator() {
     class Point {
         @replicated()
-        x: number;
+        x: number = 0;
         @replicated()
-        y: number;
+        y: number = 0;
         constructor(x: any = 0, y: any = 0) {
             this.x = x;
             this.y = y;
@@ -373,10 +372,10 @@ export function TestArrayReplicator() {
     source.push(new Point(7, 8));
     source[0].x = 10;
     source[1].y = 20;
+    console.log(source);
     let diff = replicator.genDiff(0, 1);
     console.log(diff);
     targetReplicator.applyDiff(diff);
-    console.log(source);
     console.log(target);
 
     source.splice(1,2);
diff --git a/assets/Script/sync/DiffScaner.ts b/assets/Script/sync/DiffScaner.ts
index 3f98e03..da2a90a 100644
--- a/assets/Script/sync/DiffScaner.ts
+++ b/assets/Script/sync/DiffScaner.ts
@@ -85,6 +85,7 @@ export class ReplicateScanner implements IReplicator {
             return false;
         }
         let ret: any = {};
+        let changed = false;
         // 遍历生成Diff
         for (let [name, property] of this.dataMap) {
             // let setter = property.setter || name;
@@ -94,6 +95,7 @@ export class ReplicateScanner implements IReplicator {
                 let diff = property.data.genDiff(fromVersion, toVersion);
                 if (diff) {
                     ret[setter] = diff;
+                    changed = true;
                 }
             } else {
                 if (needScan) {
@@ -101,13 +103,18 @@ export class ReplicateScanner implements IReplicator {
                         property.data = this.target[name];
                         ret[setter] = property.data;
                         property.version = toVersion;
+                        changed = true;
                     }
                 } else if (property.version > fromVersion) {
                     ret[setter] = property.data;
+                    changed = true;
                 }
             }
         }
         this.lastCheckVersion = toVersion;
+        if (!changed) {
+            return false;
+        }
         return ret;
     }
 
diff --git a/assets/Script/sync/SyncUtil.ts b/assets/Script/sync/SyncUtil.ts
index d576ba9..f038bcc 100644
--- a/assets/Script/sync/SyncUtil.ts
+++ b/assets/Script/sync/SyncUtil.ts
@@ -103,7 +103,7 @@ function makeObjectReplicatedMark(cls: any, option?: ObjectReplicatedOption): Re
 export function replicated(option?: ReplicatedOption) {
     // 真正的装饰器
     return (target: any, propertyKey: string, descriptor?: PropertyDescriptor) => {
-        return makePropertyReplicatedMark(target.constructor, propertyKey, descriptor, option);
+        return makePropertyReplicatedMark(target, propertyKey, descriptor, option);
     };
 }