diff --git a/src/widgets/header/ui/MobileSideMenu.tsx b/src/widgets/header/ui/MobileSideMenu.tsx
index 911654d4..0b5eddbf 100644
--- a/src/widgets/header/ui/MobileSideMenu.tsx
+++ b/src/widgets/header/ui/MobileSideMenu.tsx
@@ -1,8 +1,11 @@
 "use client";
 
+import { useEffect, useState } from "react";
+import { useRouter } from "next/navigation";
 import Link from "next/link";
-
 import DeleteIcon from "@/shared/images/delete.svg";
+import { useAuthStore } from "@/features/auth/model/auth.store";
+import cn from "@/shared/lib/cn";
 
 export default function MobileSideMenu({
   onClose,
@@ -15,61 +18,126 @@ export default function MobileSideMenu({
     chatId?: number;
   }) => void;
 }) {
+  const router = useRouter();
+  const { isLogined, logout } = useAuthStore();
+  const [isVisible, setIsVisible] = useState(false);
+
+  useEffect(() => {
+    const timer = requestAnimationFrame(() => setIsVisible(true));
+    return () => cancelAnimationFrame(timer);
+  }, []);
+
+  const handleClose = () => {
+    setIsVisible(false);
+  };
+
+  const handleTransitionEnd = (e: React.TransitionEvent<HTMLElement>) => {
+    if (e.propertyName !== "opacity") return;
+    if (!isVisible) onClose();
+  };
+
   const handleOpenChat = () => {
     onOpenChat();
-    onClose();
+    handleClose();
   };
 
   return (
     <div>
       <div
-        className="fixed inset-0 z-[900] bg-black/40 md:hidden"
-        onClick={onClose}
+        className={cn(
+          "fixed inset-0 z-[900] bg-black/40 transition-opacity md:hidden",
+          isVisible ? "opacity-100" : "opacity-0",
+        )}
+        onTransitionEnd={handleTransitionEnd}
+        onClick={handleClose}
       />
+
       <aside
         role="dialog"
         aria-modal="true"
-        className="fixed top-0 left-0 z-[901] h-dvh w-[78%] max-w-[320px] bg-[#1C1C22] shadow-2xl md:hidden"
+        className={cn(
+          "fixed top-0 left-0 z-[901] h-dvh w-[78%] max-w-[320px] transform bg-[#1C1C22] shadow-2xl transition-transform ease-out md:hidden",
+          isVisible ? "translate-x-0" : "-translate-x-full",
+        )}
       >
-        <header className="flex items-center justify-between px-4 py-3">
+        <header className="flex items-center justify-between border-b border-white/10 px-4 py-3">
           <h2 className="text-base font-semibold text-white">메뉴</h2>
           <DeleteIcon
-            onClick={onClose}
-            className="h-6 w-6 text-white/80 hover:bg-white/10"
+            onClick={handleClose}
+            className="h-6 w-6 cursor-pointer text-white/80 hover:bg-white/10"
           />
         </header>
 
         <nav className="p-2">
           <ul className="flex flex-col">
-            <li>
-              <button
-                type="button"
-                onClick={handleOpenChat}
-                className="w-full px-4 py-3 text-left text-white hover:bg-white/10"
-              >
-                채팅하기
-              </button>
-            </li>
+            {isLogined ? (
+              <>
+                <li>
+                  <button
+                    type="button"
+                    onClick={handleOpenChat}
+                    className="w-full px-4 py-3 text-left text-white hover:bg-white/10"
+                  >
+                    채팅하기
+                  </button>
+                </li>
+
+                <li>
+                  <Link
+                    href="/ai"
+                    className="block px-4 py-3 text-white hover:bg-white/10"
+                    onClick={handleClose}
+                  >
+                    분석하기
+                  </Link>
+                </li>
 
-            <li>
-              <Link
-                href="/ai"
-                className="block px-4 py-3 text-white hover:bg-white/10"
-                onClick={onClose}
-              >
-                분석하기
-              </Link>
-            </li>
+                <li>
+                  <Link
+                    href="/my"
+                    className="block px-4 py-3 text-white hover:bg-white/10"
+                    onClick={handleClose}
+                  >
+                    마이페이지
+                  </Link>
+                </li>
 
-            <li>
-              <Link
-                href="/my"
-                className="block px-4 py-3 text-white hover:bg-white/10"
-                onClick={onClose}
-              >
-                마이페이지
-              </Link>
-            </li>
+                <li>
+                  <button
+                    type="button"
+                    onClick={() => {
+                      logout();
+                      handleClose();
+                      router.push("/");
+                    }}
+                    className="w-full px-4 py-3 text-left text-red-400 hover:bg-white/10"
+                  >
+                    로그아웃
+                  </button>
+                </li>
+              </>
+            ) : (
+              <>
+                <li>
+                  <Link
+                    href="/login"
+                    onClick={handleClose}
+                    className="block px-4 py-3 text-white hover:bg-white/10"
+                  >
+                    로그인
+                  </Link>
+                </li>
+                <li>
+                  <Link
+                    href="/signup"
+                    onClick={handleClose}
+                    className="block px-4 py-3 text-white hover:bg-white/10"
+                  >
+                    회원가입
+                  </Link>
+                </li>
+              </>
+            )}
           </ul>
         </nav>
       </aside>