diff --git a/src/components/ui/common/Footer.tsx b/src/components/ui/common/Footer.tsx
index d1e8f0f..22cfba5 100644
--- a/src/components/ui/common/Footer.tsx
+++ b/src/components/ui/common/Footer.tsx
@@ -1,10 +1,15 @@
 'use client'
 
 export default function Footer() {
+  const runMode = process.env.NEXT_PUBLIC_RUN_MODE || 'error'
+
   return (
     <>
       <footer>
-        <div className="footer-inner">COPYRIGHT©2025 Hanwha Japan All Rights Reserved </div>
+        <div className="footer-inner">
+          COPYRIGHT©2025 Hanwha Japan All Rights Reserved
+          <span style={{ marginLeft: '10px', fontSize: '12px', color: '#888' }}>[{runMode.toUpperCase()}]</span>
+        </div>
       </footer>
     </>
   )