diff --git a/src/apis/popup.tsx b/src/apis/popup.tsx
index e885d00..fceace9 100644
--- a/src/apis/popup.tsx
+++ b/src/apis/popup.tsx
@@ -24,11 +24,19 @@ export const useOpenPopUp = () => {
 
         setToken(mdl_tknValue);
 
-        window.open(
+        const width = 500;
+        const height = 400;
+        const left = window.screenX + (window.outerWidth - width) / 2;
+        const top = window.screenY + (window.outerHeight - height) / 2;
+        var popup = window.open(
           `/pass?mdl_tkn=${mdl_tknValue}`,
           '_blank',
-          'resizable=no,width=570,height=830,left=50,top=50',
+          `resizable=no,width=${width},height=${height},left=${left},top=${top}`,
         );
+
+        popup!.onunload = function () {
+          alert('팝업이 닫혔습니다');
+        };
       },
     },
   );