diff --git a/docs/component/picker-view.md b/docs/component/picker-view.md
index 762bb218467f7600ffd6d34bc27ec1d6b95b00a1..ac9593d56c95ae467d717aac8a672249930fea5f 100644
--- a/docs/component/picker-view.md
+++ b/docs/component/picker-view.md
@@ -84,16 +84,86 @@
                 day,
                 value: [9999, month - 1, day - 1],
                 visible: true,
-                indicatorStyle: `height: 50px;`
+                indicatorStyle: `height: 50px;`,
+                
+                mouthArr1:[1,3,5,7,8,10,12],//31天的数据
+		mouthArr2:[4,6,9,11],//30天的数据
             }
         },
+        //2022-07-08新增监听事件，因为以前没有判断到，监听到每个月的时间---------->
+        watch: {
+		year: {
+		// 数据发生变化就会调用这个函数  
+		    handler(newVal) {
+			this.showDate()
+		    },
+		// 立即处理 进入页面就触发
+		immediate: true
+		},
+		month:{
+		// 数据发生变化就会调用这个函数
+		handler(newVal) {
+		    this.showDate()
+		    },
+		// 立即处理 进入页面就触发
+		immediate: true
+		}
+	},
+        //-------------------------------->
         methods: {
             bindChange: function (e) {
                 const val = e.detail.value
                 this.year = this.years[val[0]]
                 this.month = this.months[val[1]]
                 this.day = this.days[val[2]]
-            }
+
+                //由于判断太多建议封装成组件形式,将值通过emit子传父
+                /*let obj = {
+		    year:this.year,
+    		    month:this.month,
+    		    day:this.day,
+		}*/
+                //this.$emits('事件名',obj)即可
+            },
+            // 判断修改显示数据2022-07-08
+	    showDate(){
+		if (this.year % 4 == 0 && this.year % 100 != 0 || this.year % 400 == 0) {
+			if(this.month === 2){
+			    this.days = []
+			    for (let i = 1; i <= 29; i++) {
+				this.days.push(i)
+			}
+		}else if(this.mouthArr1.includes(this.month)){
+			this.days = []
+			for (let i = 1; i <= 31; i++) {
+			    this.days.push(i)
+			}
+		}else if(this.mouthArr2.includes(this.month)){
+			this.days = []
+			for (let i = 1; i <= 30; i++) {
+			    this.days.push(i)
+			}
+		}
+		} else {
+		    if(this.month === 2){
+			this.days = []
+			for (let i = 1; i <= 28; i++) {
+			    this.days.push(i)
+			}
+		    }else if(this.mouthArr1.includes(this.month)){
+			this.days = []
+			for (let i = 1; i <= 31; i++) {
+			    this.days.push(i)
+			}
+		    }else if(this.mouthArr2.includes(this.month)){
+			this.days = []
+		    for (let i = 1; i <= 30; i++) {
+			this.days.push(i)
+		    }
+		}
+	        }
+	    } //showDate
+
         }
     }
 </script>