diff --git a/src/controller/auth.ts b/src/controller/auth.ts
index 33b4dfa..240f5c4 100644
--- a/src/controller/auth.ts
+++ b/src/controller/auth.ts
@@ -11,6 +11,60 @@ import returnCode from "../library/returnCode";
 // services
 import authService from "../service/auth";
 
+/**
+ *  @이메일 유효성 검사
+ *  @route GET /auth/email
+ *  @access public
+ *  @err 1. 필요한 값이 없을 때
+ */
+const getEmailController = async (req: Request, res: Response) => {
+  try {
+    const resData: number = await authService.getEmailService(req.body.email);
+
+    if (resData === constant.NULL_VALUE) {
+      response.basicResponse(
+        res,
+        returnCode.BAD_REQUEST,
+        false,
+        "필요한 값이 없습니다."
+      );
+    } else if (resData === constant.WRONG_EMAIL_CONVENTION) {
+      response.dataResponse(
+        res,
+        returnCode.OK,
+        "올바른 형식이 아닙니다.",
+        true,
+        { isValid: false }
+      );
+    } else if (resData === constant.EMAIL_ALREADY_EXIST) {
+      response.dataResponse(
+        res,
+        returnCode.OK,
+        "이미 사용 중인 이메일입니다.",
+        true,
+        { isValid: false }
+      );
+    } else {
+      response.dataResponse(
+        res,
+        returnCode.OK,
+        "사용할 수 있는 이메일입니다.",
+        true,
+        { isValid: true }
+      );
+    }
+  } catch (err) {
+    slack.slackWebhook(req, err.message);
+    console.error(err.message);
+    response.basicResponse(
+      res,
+      returnCode.INTERNAL_SERVER_ERROR,
+      false,
+      "서버 오류"
+    );
+  }
+};
+
 /**
  *  @회원가입
  *  @route POST /auth/signup
@@ -147,6 +201,7 @@ const postLoginController = async (req: Request, res: Response) => {
   }
 };
 const authController = {
+  getEmailController,
   postSignupController,
   postLoginController,
 };
diff --git a/src/router/auth.ts b/src/router/auth.ts
index 70d754d..803733c 100644
--- a/src/router/auth.ts
+++ b/src/router/auth.ts
@@ -4,6 +4,7 @@ const router = express.Router();
 // Controller
 import authController from "../controller/auth";
 
+router.get("/email", authController.getEmailController);
 router.post("/login", authController.postLoginController);
 router.post("/signup", authController.postSignupController);
 
diff --git a/src/service/auth.ts b/src/service/auth.ts
index fc6a2e2..a7f3091 100644
--- a/src/service/auth.ts
+++ b/src/service/auth.ts
@@ -9,6 +9,36 @@ import isEmail from "validator/lib/isEmail";
 // models
 import { User } from "../models";
 
+/**
+ *  @이메일 유효성 검사
+ *  @route GET /auth/email
+ *  @access public
+ *  @err 1. 필요한 값이 없을 때
+ */
+const getEmailService = async (email: string) => {
+  // 필요한 값이 존재하지 않는 경우
+  if (!email) {
+    return constant.NULL_VALUE;
+  }
+
+  // email 형식이 잘못되었을 때
+  if (!isEmail(email)) {
+    return constant.WRONG_EMAIL_CONVENTION;
+  }
+
+  // email이 이미 존재할 때
+  const emailExist = await User.findAll({
+    where: {
+      email,
+    },
+  });
+  if (emailExist.length > 0) {
+    return constant.EMAIL_ALREADY_EXIST;
+  }
+
+  return constant.SUCCESS;
+};
+
 /**
  *  @회원가입
  *  @route POST /auth/signup
@@ -127,6 +157,7 @@ const postLoginService = async (email: string, password: string) => {
 };
 
 const authService = {
+  getEmailService,
   postSignupService,
   postLoginService,
 };