diff --git a/src/widget/intervalslider/__test__/intervalslider.test.js b/src/widget/intervalslider/__test__/intervalslider.test.js
index 3b7b3618d..363e5321f 100644
--- a/src/widget/intervalslider/__test__/intervalslider.test.js
+++ b/src/widget/intervalslider/__test__/intervalslider.test.js
@@ -61,4 +61,49 @@ describe("intervalSlider", function () {
         intervalSliderLabel.destroy();
     });
 
+    /**
+     * test_author_windy
+     */
+    it("测试拖拽", function () {
+        var intervalSliderLabel = BI.Test.createWidget({
+            type: "bi.interval_slider",
+            width: 300,
+            unit: "px",
+            cls: "layout-bg-white"
+        });
+        intervalSliderLabel.setMinAndMax({
+            min: 0,
+            max: 120
+        });
+        intervalSliderLabel.setValue({
+            min: 10,
+            max: 120
+        });
+        intervalSliderLabel.reset();
+        intervalSliderLabel.populate();
+        expect(intervalSliderLabel.getValue()).eql({
+            min: "",
+            max: ""
+        });
+        intervalSliderLabel.destroy();
+    });
+
+    /**
+     * test_author_windy
+     */
+    it("BI-65178", function () {
+        var intervalSliderLabel = BI.Test.createWidget({
+            type: "bi.interval_slider",
+            width: 300,
+            unit: "px",
+            cls: "layout-bg-white"
+        });
+        intervalSliderLabel.setMinAndMax({
+            min: -2,
+            max: 237939882
+        });
+        expect(intervalSliderLabel._getValueByPercent(0)).to.equal(-2);
+        expect(intervalSliderLabel._getValueByPercent(100)).to.equal(237939882);
+        intervalSliderLabel.destroy();
+    });
 });
\ No newline at end of file
diff --git a/src/widget/intervalslider/intervalslider.js b/src/widget/intervalslider/intervalslider.js
index 7b7e197ac..e8b09fcc4 100644
--- a/src/widget/intervalslider/intervalslider.js
+++ b/src/widget/intervalslider/intervalslider.js
@@ -397,7 +397,14 @@ BI.IntervalSlider = BI.inherit(BI.Single, {
     },
 
     // 其中取max-min后保留4为有效数字后的值的小数位数为最终value的精度
+    // 端点处的值有可能因为min,max相差量级很大(precision很大)而丢失精度，此时直接返回端点值即可
     _getValueByPercent: function (percent) {// return (((max-min)*percent)/100+min)
+        if (percent === 0) {
+            return this.min;
+        }
+        if (percent === 100) {
+            return this.max;
+        }
         var sub = this.calculation.accurateSubtraction(this.max, this.min);
         var mul = this.calculation.accurateMultiplication(sub, percent);
         var div = this.calculation.accurateDivisionTenExponent(mul, 2);