diff --git a/.gitignore b/.gitignore
index 475036a..9ee77e8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -25,3 +25,4 @@ dist-ssr
 *.sw?
 
 .vercel
+.env*.local
diff --git a/src/pages/home/HomePage.tsx b/src/pages/home/HomePage.tsx
index c2fd2eb..b6504bb 100644
--- a/src/pages/home/HomePage.tsx
+++ b/src/pages/home/HomePage.tsx
@@ -7,8 +7,6 @@ import {
   useGetCompany,
   usePostRecommendPostList,
 } from "@/features/home";
-import { useDebounce } from "@/shared/lib/useDebounce";
-
 import { ErrorBoundary } from "@/shared/ui/ErrorBoundary";
 import { Loading } from "@/shared/ui/Loading";
 import { SkeletonList } from "@/shared/ui/SkeletonList";
@@ -29,10 +27,11 @@ const SearchPostList = lazy(() =>
 );
 
 const HomePage = () => {
-  const [selectedTab, setSelectedTab] = useState(0);
   const [modal, setModal] = useState(false);
   const { companies, toggleCompany, resetCompanies } = useCompanyStore();
-
+  const { user } = useUserStore();
+  const isLogin = !!user?.accessToken;
+  const navigate = useNavigate();
   const { data: companyData } = useGetCompany();
   const { mutate: postRecommendList, isPending: isRefreshing } =
     usePostRecommendPostList();
@@ -40,25 +39,26 @@ const HomePage = () => {
   const maxCompany = companyData?.companies.slice(0, 8) ?? [];
 
   const [searchParams, setSearchParams] = useSearchParams();
-  const searchQuery = searchParams.get("search");
-  const debouncedInput = useDebounce(searchQuery, 200);
-  const isSearching = debouncedInput && debouncedInput.trim() !== "";
-  const { user } = useUserStore();
-  const isLogin = !!user?.accessToken;
-  const navigate = useNavigate();
+  const searchQuery = searchParams.get("search") ?? "";
+  const selectedTab = Number(searchParams.get("tab") ?? 0);
+
+  useEffect(() => {
+    if (!searchParams.get("tab") && !searchParams.get("search")) {
+      setSearchParams({ tab: "0" }, { replace: true });
+    }
+  }, []);
+
+  const isSearching = !!searchQuery.trim();
 
   const handleTabChange = (tab: number) => {
     if (tab === 1 && !isLogin) {
       toast.info("로그인이 필요한 서비스입니다.", {
         icon: <img src={Alert} alt="login으로 이동" />,
       });
-
       navigate("/login");
-
       return;
     }
-    setSearchParams({});
-    setSelectedTab(tab);
+    setSearchParams({ tab: String(tab) }, { replace: true });
   };
 
   useEffect(() => {
@@ -72,7 +72,7 @@ const HomePage = () => {
       <Helmet>
         <title>
           {isSearching
-            ? `"${debouncedInput}" | TechFork`
+            ? `"${searchQuery}" | TechFork`
             : `TechFork | ${TAB_MAP[selectedTab]}`}
         </title>
         <meta property="og:title" content="TechFork | 기업 기술 블로그 모음" />
@@ -103,7 +103,7 @@ const HomePage = () => {
           <>
             <ErrorBoundary>
               <Suspense fallback={<SkeletonList />}>
-                <SearchPostList query={debouncedInput ?? ""} />
+                <SearchPostList query={searchQuery ?? ""} />
               </Suspense>
             </ErrorBoundary>
           </>
diff --git a/src/pages/onboarding/Onboarding.tsx b/src/pages/onboarding/Onboarding.tsx
index 681ee07..1d23490 100644
--- a/src/pages/onboarding/Onboarding.tsx
+++ b/src/pages/onboarding/Onboarding.tsx
@@ -77,8 +77,25 @@ const Onboarding = () => {
               </div>
 
               <p className="body-r-14 flex gap-1 font-alternative">
-                <p className="text-blue-500">이용약관</p>및
-                <p className="text-blue-500">개인정보취급방침에</p>
+                <p className="text-blue-500">
+                  <a
+                    href="https://lily-reptile-b33.notion.site/334d0aa99dcf8066a9abc2e9a2aca4fd?source=copy_link"
+                    target="_blank"
+                    rel="noopener noreferrer"
+                  >
+                    이용약관
+                  </a>
+                </p>
+                및
+                <p className="text-blue-500">
+                  <a
+                    target="_blank"
+                    rel="noopener noreferrer"
+                    href="https://lily-reptile-b33.notion.site/334d0aa99dcf8083bd3bf5e51e609a54?source=copy_link"
+                  >
+                    개인정보취급방침에
+                  </a>
+                </p>
                 동의합니다.
               </p>
             </div>
diff --git a/src/widgets/header/SystemHeader.tsx b/src/widgets/header/SystemHeader.tsx
index 1c2a54d..a53a865 100644
--- a/src/widgets/header/SystemHeader.tsx
+++ b/src/widgets/header/SystemHeader.tsx
@@ -1,97 +1,51 @@
 import Search from "@/assets/icons/search.svg";
 import User from "@/assets/images/user.png";
 import { useNavigate, useSearchParams } from "react-router-dom";
-import { useEffect, useRef, useState } from "react";
 import { toast } from "react-toastify";
 import Alert from "@/assets/icons/alert2.svg";
-import Logout from "@/assets/icons/confirm.svg";
 import { useThemeToggle } from "@/shared/lib/useThemeToggle";
-import useUserStore from "@/shared/model/useUserStore";
 import { MYPAGE_NAV } from "@/features/mypage";
 import { useCompanyStore } from "@/features/home";
 import { useGetMyProfile } from "@/shared/api/my";
-import { postLogout } from "@/features/Login";
 import { cn } from "@/shared/lib/cn";
 import { Button } from "@/shared/ui/button/Button";
+import { useUserMenu } from "./model/useUserMenu";
+import { useEffect, useState } from "react";
+import { useDebounce } from "@/shared/lib/useDebounce";
 
 export const SystemHeader = () => {
   const navigate = useNavigate();
-  const [userModal, setUserModal] = useState(false);
-  const modalRef = useRef<HTMLDivElement | null>(null);
   const { isDark } = useThemeToggle();
-
-  const { user, logout } = useUserStore();
-  const { resetCompanies, companies } = useCompanyStore();
-  console.log(companies);
-  const isLogin = !!user?.accessToken;
-
+  const { resetCompanies } = useCompanyStore();
+  const { isLogin, userModal, setUserModal, modalRef, handleNavClick } =
+    useUserMenu();
   const { data } = useGetMyProfile(isLogin);
-  const [searchParams] = useSearchParams();
-  const [input, setInput] = useState<string>("");
-
-  const handleLogout = async () => {
-    try {
-      await postLogout();
-
-      toast.info(`로그아웃 되었습니다.`, {
-        icon: <img src={Logout} alt="logout" />,
-      });
-    } catch (error) {
-      console.error("로그아웃 실패:", error);
-    } finally {
-      logout();
-      resetCompanies();
-      setUserModal(false);
-      navigate("/");
-    }
-  };
-
-  const handleNavClick = (item: { name: string; nav?: string }) => {
-    if (item.name === "로그아웃") {
-      handleLogout();
-    } else if (item.nav) {
-      setUserModal(false);
-      navigate(item.nav);
-    }
-  };
+  const [searchParams] = useSearchParams(); //tab
+  const [input, setInput] = useState(() => searchParams.get("search") ?? "");
+  const urlSearch = searchParams.get("search") ?? "";
 
   useEffect(() => {
-    const searchQuery = searchParams.get("search") || "";
-    if (input !== searchQuery) {
-      setInput(searchQuery);
-    }
-  }, [searchParams]);
-
+    setInput(urlSearch);
+  }, [urlSearch]);
+  const debouncedInput = useDebounce(input, 300);
   useEffect(() => {
-    if (input === "") {
-      if (searchParams.get("search")) {
-        navigate("/", { replace: true });
-      }
-      return;
-    }
-    if (input !== searchParams.get("search")) {
-      navigate(`/?search=${input}`, { replace: true });
-    }
-  }, [input, navigate]);
+    const trimmed = debouncedInput.trim();
+    const currentSearch = searchParams.get("search") ?? "";
 
-  useEffect(() => {
-    const handleClick = (e: MouseEvent) => {
-      if (!modalRef.current?.contains(e.target as Node))
-        return setUserModal(false);
-    };
+    if (trimmed === currentSearch) return;
 
-    document.addEventListener("click", handleClick);
-    return () => {
-      //cleanup
-      document.removeEventListener("click", handleClick);
-    };
-  }, []);
-
-  useEffect(() => {
-    if (userModal) {
-      setInput("");
+    if (!trimmed) {
+      navigate("/?tab=0", { replace: true });
+    } else {
+      navigate(`/?search=${encodeURIComponent(trimmed)}`, { replace: true });
     }
-  }, [userModal]);
+  }, [debouncedInput]);
+
+  const handleLogoClick = () => {
+    resetCompanies();
+    setInput("");
+    navigate("/?tab=0");
+  };
 
   return (
     <header className={cn("max-w-480  mx-auto gap-2 pb-5 pt-7   px-14   ")}>
@@ -100,10 +54,7 @@ export const SystemHeader = () => {
           src={isDark ? "/dark_logo.svg" : "/logo.svg"}
           alt="로고"
           className="w-35 h-12 cursor-pointer"
-          onClick={() => {
-            navigate("/");
-            setInput("");
-          }}
+          onClick={handleLogoClick}
           fetchPriority="high"
         />
         <div className="w-160 flex  bg-bgPrimary rounded-lg border border-bgNormal px-3">
@@ -151,7 +102,11 @@ export const SystemHeader = () => {
           >
             {MYPAGE_NAV.map(item => {
               return (
-                <div className="p-4" onClick={() => handleNavClick(item)}>
+                <div
+                  key={item.name}
+                  className="p-4"
+                  onClick={() => handleNavClick(item)}
+                >
                   {item.name}
                 </div>
               );
diff --git a/src/widgets/header/model/useUserMenu.tsx b/src/widgets/header/model/useUserMenu.tsx
new file mode 100644
index 0000000..fcc67b9
--- /dev/null
+++ b/src/widgets/header/model/useUserMenu.tsx
@@ -0,0 +1,62 @@
+import Logout from "@/assets/icons/confirm.svg";
+import { postLogout } from "@/features/Login";
+import { useCompanyStore } from "@/features/home";
+import useUserStore from "@/shared/model/useUserStore";
+import { useEffect, useRef, useState } from "react";
+import { toast } from "react-toastify";
+import { useNavigate } from "react-router-dom";
+
+export const useUserMenu = () => {
+  const navigate = useNavigate();
+  const modalRef = useRef<HTMLDivElement | null>(null);
+  const [userModal, setUserModal] = useState(false);
+
+  const { logout, user } = useUserStore();
+  const { resetCompanies } = useCompanyStore();
+  const isLogin = !!user?.accessToken;
+
+  const handleLogout = async () => {
+    try {
+      await postLogout();
+      toast.info("로그아웃 되었습니다.", {
+        icon: <img src={Logout} alt="logout" />,
+      });
+    } finally {
+      logout();
+      resetCompanies();
+      setUserModal(false);
+      navigate("/");
+    }
+  };
+
+  const handleNavClick = (item: { name: string; nav?: string }) => {
+    if (item.name === "로그아웃") {
+      handleLogout();
+      return;
+    }
+
+    if (item.nav) {
+      setUserModal(false);
+      navigate(item.nav);
+    }
+  };
+
+  useEffect(() => {
+    const handleClick = (e: MouseEvent) => {
+      if (!modalRef.current?.contains(e.target as Node)) {
+        setUserModal(false);
+      }
+    };
+
+    document.addEventListener("click", handleClick);
+    return () => document.removeEventListener("click", handleClick);
+  }, []);
+
+  return {
+    isLogin,
+    userModal,
+    setUserModal,
+    modalRef,
+    handleNavClick,
+  };
+};