diff --git a/.pnp.cjs b/.pnp.cjs
index 2fe3e23e..d2755122 100755
--- a/.pnp.cjs
+++ b/.pnp.cjs
@@ -28,6 +28,7 @@ function $$SETUP_STATE(hydrateRuntimeState, basePath) {
         [null, {\
           "packageLocation": "./",\
           "packageDependencies": [\
+            ["@bcsdlab/koin", "virtual:2a928e07684dc9ad50d6744a82230310880d82a84463b276e7d19ce4f4762d0780e66ccb13980e8f3eb76ec0bcd5207e76cb8696dbcb80089851be6e3a1536fb#npm:0.0.15"],\
             ["@hookform/resolvers", "virtual:2a928e07684dc9ad50d6744a82230310880d82a84463b276e7d19ce4f4762d0780e66ccb13980e8f3eb76ec0bcd5207e76cb8696dbcb80089851be6e3a1536fb#npm:3.3.4"],\
             ["@tanstack/react-query", "virtual:2a928e07684dc9ad50d6744a82230310880d82a84463b276e7d19ce4f4762d0780e66ccb13980e8f3eb76ec0bcd5207e76cb8696dbcb80089851be6e3a1536fb#npm:5.18.1"],\
             ["@testing-library/jest-dom", "npm:5.17.0"],\
@@ -3152,6 +3153,28 @@ function $$SETUP_STATE(hydrateRuntimeState, basePath) {
           "linkType": "HARD"\
         }]\
       ]],\
+      ["@bcsdlab/koin", [\
+        ["npm:0.0.15", {\
+          "packageLocation": "./.yarn/cache/@bcsdlab-koin-npm-0.0.15-ad194f9536-30b1904180.zip/node_modules/@bcsdlab/koin/",\
+          "packageDependencies": [\
+            ["@bcsdlab/koin", "npm:0.0.15"]\
+          ],\
+          "linkType": "SOFT"\
+        }],\
+        ["virtual:2a928e07684dc9ad50d6744a82230310880d82a84463b276e7d19ce4f4762d0780e66ccb13980e8f3eb76ec0bcd5207e76cb8696dbcb80089851be6e3a1536fb#npm:0.0.15", {\
+          "packageLocation": "./.yarn/__virtual__/@bcsdlab-koin-virtual-da544e0f84/0/cache/@bcsdlab-koin-npm-0.0.15-ad194f9536-30b1904180.zip/node_modules/@bcsdlab/koin/",\
+          "packageDependencies": [\
+            ["@bcsdlab/koin", "virtual:2a928e07684dc9ad50d6744a82230310880d82a84463b276e7d19ce4f4762d0780e66ccb13980e8f3eb76ec0bcd5207e76cb8696dbcb80089851be6e3a1536fb#npm:0.0.15"],\
+            ["@types/axios", null],\
+            ["axios", "npm:1.6.7"]\
+          ],\
+          "packagePeers": [\
+            "@types/axios",\
+            "axios"\
+          ],\
+          "linkType": "HARD"\
+        }]\
+      ]],\
       ["@csstools/normalize.css", [\
         ["npm:12.1.1", {\
           "packageLocation": "./.yarn/cache/@csstools-normalize.css-npm-12.1.1-7ccc5f7985-a356ee0fcb.zip/node_modules/@csstools/normalize.css/",\
@@ -12311,6 +12334,7 @@ function $$SETUP_STATE(hydrateRuntimeState, basePath) {
           "packageLocation": "./",\
           "packageDependencies": [\
             ["koin_owner_web", "workspace:."],\
+            ["@bcsdlab/koin", "virtual:2a928e07684dc9ad50d6744a82230310880d82a84463b276e7d19ce4f4762d0780e66ccb13980e8f3eb76ec0bcd5207e76cb8696dbcb80089851be6e3a1536fb#npm:0.0.15"],\
             ["@hookform/resolvers", "virtual:2a928e07684dc9ad50d6744a82230310880d82a84463b276e7d19ce4f4762d0780e66ccb13980e8f3eb76ec0bcd5207e76cb8696dbcb80089851be6e3a1536fb#npm:3.3.4"],\
             ["@tanstack/react-query", "virtual:2a928e07684dc9ad50d6744a82230310880d82a84463b276e7d19ce4f4762d0780e66ccb13980e8f3eb76ec0bcd5207e76cb8696dbcb80089851be6e3a1536fb#npm:5.18.1"],\
             ["@testing-library/jest-dom", "npm:5.17.0"],\
diff --git a/.yarn/cache/@bcsdlab-koin-npm-0.0.15-ad194f9536-30b1904180.zip b/.yarn/cache/@bcsdlab-koin-npm-0.0.15-ad194f9536-30b1904180.zip
new file mode 100644
index 00000000..b4415a50
Binary files /dev/null and b/.yarn/cache/@bcsdlab-koin-npm-0.0.15-ad194f9536-30b1904180.zip differ
diff --git a/package.json b/package.json
index 8bcdddfe..58cc6ceb 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
   "version": "0.1.0",
   "private": true,
   "dependencies": {
+    "@bcsdlab/koin": "^0.0.15",
     "@hookform/resolvers": "^3.1.0",
     "@tanstack/react-query": "^5.8.1",
     "@testing-library/jest-dom": "^5.14.1",
diff --git a/src/page/Auth/Signup/component/ErrorMessage/index.tsx b/src/page/Auth/Signup/component/ErrorMessage/index.tsx
index 9b9d8e21..8c2b2c4e 100644
--- a/src/page/Auth/Signup/component/ErrorMessage/index.tsx
+++ b/src/page/Auth/Signup/component/ErrorMessage/index.tsx
@@ -2,16 +2,31 @@ import { ReactComponent as Warn } from 'assets/svg/auth/warning.svg';
 import styles from './ErrorMessage.module.scss';
 
 interface ErrorMessageProps {
-  message:string | (string | undefined)[]
+  message: string | (string | undefined | null)[]
 }
 
 export default function ErrorMessage({ message }:ErrorMessageProps) {
-  return (
-    <div className={styles.warn}>
-      <Warn />
-      <span className={styles['warn--phrase']}>
-        {typeof message === 'string' ? message : message[0]}
-      </span>
-    </div>
-  );
+  if (typeof message === 'string') {
+    return (
+      <div className={styles.warn}>
+        <Warn />
+        <span className={styles['warn--phrase']}>
+          {message}
+        </span>
+      </div>
+    );
+  }
+
+  if (message.length > 0) {
+    return (
+      <div className={styles.warn}>
+        <Warn />
+        <span className={styles['warn--phrase']}>
+          {typeof message === 'string' ? message : message[0]}
+        </span>
+      </div>
+    );
+  }
+
+  return null;
 }
diff --git a/src/page/Auth/Signup/hooks/useCheckEmailDuplicate.ts b/src/page/Auth/Signup/hooks/useCheckEmailDuplicate.ts
index 54f07c2e..27bd1e4a 100644
--- a/src/page/Auth/Signup/hooks/useCheckEmailDuplicate.ts
+++ b/src/page/Auth/Signup/hooks/useCheckEmailDuplicate.ts
@@ -5,13 +5,14 @@ import {
 import { SubmitHandler } from 'react-hook-form';
 import { User } from 'page/Auth/Signup/types/User';
 import useRegisterInfo from 'store/registerStore';
+import { isKoinError } from '@bcsdlab/koin';
 
 export default function useCheckEmailDuplicate(isMobile: boolean) {
   const [email, setEmail] = useState<string>('');
   const { status, refetch, error } = useCheckDuplicate(email);
   const { userInfo: userData, setUserInfo: setId } = useRegisterInfo();
   const debounceSearch = useRef<NodeJS.Timeout>();
-  const errorMessage:string | undefined = status === 'error' ? Object(error).response.data.message : null;
+  const errorMessage = isKoinError(error) && error.status === 409 ? '이미 사용중인 아이디입니다.' : null;
   const onSubmit:SubmitHandler<User> = (data) => {
     setEmail(() => (data.email ? data.email : ''));
   };
diff --git a/src/query/auth.ts b/src/query/auth.ts
index 8d2275d7..a8d5cf1b 100644
--- a/src/query/auth.ts
+++ b/src/query/auth.ts
@@ -9,8 +9,8 @@ import { useState } from 'react';
 import { useNavigate } from 'react-router-dom';
 import { useErrorMessageStore } from 'store/errorMessageStore';
 import usePrevPathStore from 'store/path';
-import { isKoinError } from 'utils/ts/isKoinError';
 import useStepStore from 'store/useStepStore';
+import { isKoinError } from '@bcsdlab/koin';
 
 interface VerifyInput {
   email: string;
diff --git a/src/utils/ts/isKoinError.ts b/src/utils/ts/isKoinError.ts
deleted file mode 100644
index f3efde8a..00000000
--- a/src/utils/ts/isKoinError.ts
+++ /dev/null
@@ -1,10 +0,0 @@
-import { KoinError } from 'model/error';
-
-export function isKoinError(error: unknown): error is KoinError {
-  try {
-    // 코인 서버 에러인지 아닌지를 확인
-    return (error as KoinError).type === 'KOIN_ERROR';
-  } catch {
-    return false;
-  }
-}
diff --git a/yarn.lock b/yarn.lock
index 1647d9c6..f5eca45f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1650,6 +1650,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@bcsdlab/koin@npm:^0.0.15":
+  version: 0.0.15
+  resolution: "@bcsdlab/koin@npm:0.0.15"
+  peerDependencies:
+    axios: ^0.27.2
+  checksum: 30b1904180a8278bdc45cbb487e10c88da6034d74964070a2837694df16b87606535b45bc5675f4f8038d7530b9d2ecf009b11d360bc572141fe92ba3ef6059e
+  languageName: node
+  linkType: hard
+
 "@csstools/normalize.css@npm:*":
   version: 12.1.1
   resolution: "@csstools/normalize.css@npm:12.1.1"
@@ -8982,6 +8991,7 @@ __metadata:
   version: 0.0.0-use.local
   resolution: "koin_owner_web@workspace:."
   dependencies:
+    "@bcsdlab/koin": ^0.0.15
     "@hookform/resolvers": ^3.1.0
     "@tanstack/react-query": ^5.8.1
     "@testing-library/jest-dom": ^5.14.1