diff --git a/src/components/dateRange/index.vue b/src/components/dateRange/index.vue
index d5ea8712..56efe1de 100644
--- a/src/components/dateRange/index.vue
+++ b/src/components/dateRange/index.vue
@@ -4,6 +4,7 @@
       :range-separator="rangeSepaSrator"
       :start-placeholder="startPlaceholder"
       :end-placeholder="endPlaceholder"
+      :default-range="[-30,0]"
       @change="onDateRangeChange"
       :picker-options="pickerOptions"
       ></el-date-picker>
@@ -80,6 +81,14 @@ export default {
     pickerOptions:{
         typeof:Object,
         default:util.pickerOptions('datarange')
+    },
+    autoDefault:{
+        type:Boolean,
+        default:true,
+    },
+    defaultRange:{
+        type:Array,
+        default:[-15,15]
     }
   },
   methods: { 
@@ -93,6 +102,18 @@ export default {
               this.dateRange=[this.value[this.startKey],this.value[this.endKey]]
             }
           }
+          if( !this.dateRange || this.dateRange.length===0){
+              if(this.autoDefault===true || (this.autoDefault!==false && this.defaultRange && this.defaultRange.length==2)){
+                  var now=new Date();
+                  var start=new Date(); 
+                  var end=new Date(); 
+                  start.setTime(now.getTime() + 3600 * 1000 * 24 * this.defaultRange[0]);
+                  end.setTime(now.getTime() + 3600 * 1000 * 24 * this.defaultRange[1]);
+                  this.dateRange.push(util.formatDate.format(start,this.valueFormat))
+                  this.dateRange.push(util.formatDate.format(end,this.valueFormat))
+                this.onDateRangeChange(this.dateRange);
+              }
+          }
           
       },
       onDateRangeChange(dates){