diff --git a/assets/js/miracles.min.js b/assets/js/miracles.min.js
index da8fee25..9e45b306 100644
--- a/assets/js/miracles.min.js
+++ b/assets/js/miracles.min.js
@@ -41,6 +41,19 @@ function getCookie(cname){
     return "";
 }
 
+/**
+ *  Base Animation
+ *  基础动画
+ */
+function scaleIn(object,time) {
+	object.css('transition',time).css('transform','scale(0)');
+	object.show();
+	object.css('transform','scale(1)');
+}
+function scaleOut(object,time) {
+	object.css('transition',time).css('transform','scale(0)')
+}
+
 /**
  *  Dark theme
  */
@@ -114,6 +127,15 @@ function GoTop() {
 	document.body.scrollTop = 0;
     document.documentElement.scrollTop = 0;
 }
+$('#gotop').hide();
+$(window).scroll(function(){
+    if($(window).scrollTop()>450){
+        scaleIn($('#gotop'),'0.7');
+    }
+    else{
+		scaleOut($('#gotop'),'0.7');
+	}
+});
 
 /**
  *  Js Loader