diff --git a/src/main/java/com/capstone/BnagFer/domain/accounts/controller/AccountsController.java b/src/main/java/com/capstone/BnagFer/domain/accounts/controller/AccountsController.java
index 168d081b..712be348 100644
--- a/src/main/java/com/capstone/BnagFer/domain/accounts/controller/AccountsController.java
+++ b/src/main/java/com/capstone/BnagFer/domain/accounts/controller/AccountsController.java
@@ -9,6 +9,7 @@
 import com.capstone.BnagFer.domain.accounts.jwt.dto.JwtDto;
 import com.capstone.BnagFer.domain.accounts.jwt.exception.SecurityCustomException;
 import com.capstone.BnagFer.domain.accounts.jwt.exception.TokenErrorCode;
+import com.capstone.BnagFer.domain.accounts.service.account.AccountsCommonService;
 import com.capstone.BnagFer.domain.accounts.service.account.AccountsQueryService;
 import com.capstone.BnagFer.domain.accounts.service.account.AccountsService;
 import com.capstone.BnagFer.domain.accounts.service.account.KakaoService;
@@ -37,6 +38,7 @@ public class AccountsController {
     private final JwtProvider jwtProvider;
     private final KakaoService kakaoService;
     private final EmailService emailService;
+    private final AccountsCommonService accountsCommonService;
 
     @Operation(summary = "일반 로그인", description = "이메일, 비밀번호를 입력받아 로그인을 진행합니다. 이때, FCM토큰을 같이 넘겨줘야 함." +
             "반환 값으로 JWT accessToken과 refreshToken이 발급됨. accessToken 값을 Authorize에 인증")
@@ -152,9 +154,16 @@ public ApiResponse<String> verifyCode(@Valid @RequestBody EmailVerifyDto request
         boolean check = emailService.verifyCode(requestDto);
         if (check) {
             return ApiResponse.onSuccess("인증 완료!");
-        }
-        else {
+        } else {
             return ApiResponse.onFailure(HttpStatus.BAD_REQUEST.name(), "인증 실패");
         }
     }
+
+    @Operation(summary = "이메일 사용 가능 여부 확인", description = "이메일을 입력받아 사용 가능한지 여부를 확인합니다.")
+    @GetMapping("/checkEmail")
+    public ApiResponse<String> checkEmailAvailability(@RequestParam String email) {
+        accountsCommonService.checkUserEmail(email);
+        return ApiResponse.onSuccess("사용 가능한 이메일입니다.");
+    }
+
 }
diff --git a/src/main/java/com/capstone/BnagFer/domain/accounts/service/account/AccountsCommonService.java b/src/main/java/com/capstone/BnagFer/domain/accounts/service/account/AccountsCommonService.java
index 87f7599c..cc0999de 100644
--- a/src/main/java/com/capstone/BnagFer/domain/accounts/service/account/AccountsCommonService.java
+++ b/src/main/java/com/capstone/BnagFer/domain/accounts/service/account/AccountsCommonService.java
@@ -2,6 +2,7 @@
 
 import com.capstone.BnagFer.domain.accounts.entity.User;
 import com.capstone.BnagFer.domain.accounts.exception.AccountsExceptionHandler;
+import com.capstone.BnagFer.domain.accounts.repository.UserJpaRepository;
 import com.capstone.BnagFer.domain.report.entity.UserActivity;
 import com.capstone.BnagFer.global.common.ErrorCode;
 import lombok.RequiredArgsConstructor;
@@ -13,6 +14,8 @@
 @Service
 public class AccountsCommonService {
 
+    private final UserJpaRepository userJpaRepository;
+
     public void checkUserProfile(User user) {
         if (user.getProfile() == null)
             throw new AccountsExceptionHandler(ErrorCode.PROFILE_NOT_EXIST);
@@ -23,9 +26,9 @@ public void checkUserActivity(User user) {
             throw new AccountsExceptionHandler(ErrorCode.USER_IS_BANNED);
     }
 
-    public void validateStaffAccess(User user) {
-        if (!user.getIsStaff()) {
-            throw new AccountsExceptionHandler(ErrorCode.USER_IS_NOT_STAFF);
+    public void checkUserEmail(String email) {
+        if (userJpaRepository.existsByEmail(email)) {
+            throw new AccountsExceptionHandler(ErrorCode.EMAIL_ALREADY_EXIST);
         }
     }
 }
\ No newline at end of file
diff --git a/src/main/java/com/capstone/BnagFer/domain/accounts/service/account/AccountsService.java b/src/main/java/com/capstone/BnagFer/domain/accounts/service/account/AccountsService.java
index 8344ab0f..32e44e86 100644
--- a/src/main/java/com/capstone/BnagFer/domain/accounts/service/account/AccountsService.java
+++ b/src/main/java/com/capstone/BnagFer/domain/accounts/service/account/AccountsService.java
@@ -31,6 +31,7 @@ public class AccountsService {
     private final PasswordEncoder passwordEncoder;
     private final JwtProvider jwtProvider;
     private final RedisUtil redisUtil;
+    private final AccountsCommonService accountsCommonService;
 
     public UserLoginResponseDto login(UserLoginRequestDto requestDto) {
 
@@ -67,9 +68,7 @@ public UserSignupResponseDto signup(UserSignupRequestDto requestDto) {
             throw new AccountsExceptionHandler(ErrorCode.PASSWORD_NOT_EQUAL);
 
         // 이메일 중복 확인
-        if (userJpaRepository.existsByEmail(requestDto.email())) {
-            throw new AccountsExceptionHandler(ErrorCode.USER_ALREADY_EXIST);
-        }
+        accountsCommonService.checkUserEmail(requestDto.email());
 
         String encodedPw = passwordEncoder.encode(requestDto.password());
         User user = requestDto.toEntity(encodedPw);
@@ -144,9 +143,7 @@ public void updateEmail(HttpServletRequest request, User user, ChangeEmailReques
         }
 
         // 새 이메일이 이미 사용 중인지 확인
-        if (userJpaRepository.existsByEmail(requestDto.newEmail())) {
-            throw new AccountsExceptionHandler(ErrorCode.EMAIL_ALREADY_EXIST);
-        }
+        accountsCommonService.checkUserEmail(requestDto.newEmail());
 
         // 이메일 변경
         user.updateEmail(requestDto);
diff --git a/src/main/java/com/capstone/BnagFer/global/common/ErrorCode.java b/src/main/java/com/capstone/BnagFer/global/common/ErrorCode.java
index adbdf5c0..a47994c2 100644
--- a/src/main/java/com/capstone/BnagFer/global/common/ErrorCode.java
+++ b/src/main/java/com/capstone/BnagFer/global/common/ErrorCode.java
@@ -31,6 +31,7 @@ public enum ErrorCode implements BaseErrorCode {
     EMAIL_NOT_MATCH(HttpStatus.BAD_REQUEST, "USER414", "이메일이 맞지 않습니다."),
     CANNOT_USE_SAME_PASSWORD(HttpStatus.BAD_REQUEST, "USER415", "기존 비밀번호와 동일합니다."),
     USER_IS_BANNED(HttpStatus.BAD_REQUEST, "USER416", "사용이 정지된 유저입니다."),
+    EMAIL_ALREADY_EXIST(HttpStatus.BAD_REQUEST, "USER417", "해당 이메일이 이미 존재합니다."),
 
     // Firebase 관련 에러
     FIREBASE_MESSAGING_ERROR(HttpStatus.INTERNAL_SERVER_ERROR, "FIREBASE401", "Firebase 메시징 예외가 발생했습니다."),
@@ -47,7 +48,6 @@ public enum ErrorCode implements BaseErrorCode {
     PROFILE_ALREADY_EXIST(HttpStatus.BAD_REQUEST, "PROFILE402", "프로필이 이미 존재합니다."),
     PROFILE_NOT_FOUND(HttpStatus.BAD_REQUEST, "PROFILE403", "해당 프로필이 존재하지 않습니다."),
     PROFILE_AND_USER_NOT_MATCHED(HttpStatus.BAD_REQUEST, "PROFILE404", "자신의 프로필이 아닙니다. 권한이 없습니다."),
-    EMAIL_ALREADY_EXIST(HttpStatus.BAD_REQUEST, "PROFILE404", "해당 이메일이 이미 존재합니다."),
 
     // Tactic 관련 에러
     TACTIC_NOT_FOUND(HttpStatus.BAD_REQUEST, "TACTIC401", "전술이 없습니다."),
diff --git a/src/main/java/com/capstone/BnagFer/global/config/SecurityConfig.java b/src/main/java/com/capstone/BnagFer/global/config/SecurityConfig.java
index d65c908c..53d2a8a9 100644
--- a/src/main/java/com/capstone/BnagFer/global/config/SecurityConfig.java
+++ b/src/main/java/com/capstone/BnagFer/global/config/SecurityConfig.java
@@ -32,7 +32,7 @@ public class SecurityConfig {
 
     private final String[] swaggerUrls = {"/swagger-ui/**", "/v3/**"};
     private final String[] authUrls = {"/", "/accounts/signup/**", "/accounts/social/**", "/accounts/login/**",
-            "/api/v1/auth", "/oauth/kakao/**", "/accounts/reissue/**", "/accounts/forgotPw/**", "/accounts/email/send-email", "/accounts/email/verify"};
+            "/api/v1/auth", "/oauth/kakao/**", "/accounts/reissue/**", "/accounts/forgotPw/**", "/accounts/email/send-email", "/accounts/email/verify", "/accounts/checkEmail"};
     private final String[] allowedUrls = Stream.concat(Arrays.stream(swaggerUrls), Arrays.stream(authUrls))
             .toArray(String[]::new);