diff --git a/packages/reactivity/src/ref.ts b/packages/reactivity/src/ref.ts
index 6194830..86ee21d 100644
--- a/packages/reactivity/src/ref.ts
+++ b/packages/reactivity/src/ref.ts
@@ -25,6 +25,7 @@ class RefImpl<T> {
     value: T,
     public readonly __v_isShallow: boolean
   ) {
+    //原始数据
     this._rawValue = value
     this._value = __v_isShallow ? value : toReactive(value)
   }
@@ -32,15 +33,24 @@ class RefImpl<T> {
     trackRefValue(this)
     return this._value
   }
+
+  /**
+   * newValue 新数据
+   * this._rawValue为旧数据(原始数据)
+   * 对比两个数据是否发生改变
+   */
   set value(newValue) {
     if (hasChanged(newValue, this._rawValue)) {
+      //更新原始数据
       this._rawValue = newValue
+      //更新 .value的值
       this._value = toReactive(newValue)
+      //触发依赖
       triggerRefValue(this)
     }
   }
 }
-//触发依赖
+//为ref的value进行触发依赖工作
 export function triggerRefValue(ref) {
   if (ref.dep) {
     triggerEffects(ref.dep)