diff --git a/src/main/java/com/kcy/fitapet/domain/member/api/AccountApi.java b/src/main/java/com/kcy/fitapet/domain/member/api/AccountApi.java
index 7e8ecf70..805bc129 100644
--- a/src/main/java/com/kcy/fitapet/domain/member/api/AccountApi.java
+++ b/src/main/java/com/kcy/fitapet/domain/member/api/AccountApi.java
@@ -23,6 +23,8 @@
 import org.springframework.security.core.annotation.AuthenticationPrincipal;
 import org.springframework.web.bind.annotation.*;
 
+import java.util.Map;
+
 @Tag(name = "프로필 API")
 @RestController
 @Slf4j
@@ -38,9 +40,19 @@ public ResponseEntity<?> getProfile(@AuthenticationPrincipal CustomUserDetails u
         return ResponseEntity.ok(SuccessResponse.from(member));
     }
 
+    @Operation(summary = "ID 존재 확인")
+    @GetMapping("/exists")
+    @Parameters({
+            @Parameter(name = "uid", description = "확인할 ID", required = true)
+    })
+    public ResponseEntity<?> getExistsUid(@RequestParam("uid") @NotBlank String uid) {
+        boolean exists = memberAccountService.existsUid(uid);
+        return ResponseEntity.ok(SuccessResponse.from(Map.of("valid", exists)));
+    }
+
     @Operation(summary = "프로필(비밀번호/이름) 수정")
     @Parameters({
-            @Parameter(name = "type", description = "수정할 프로필 타입", example = "name/password/", required = true),
+            @Parameter(name = "type", description = "수정할 프로필 타입", required = true),
             @Parameter(name = "req", description = "수정할 프로필 정보")
     })
     @PutMapping("")
diff --git a/src/main/java/com/kcy/fitapet/domain/member/dao/MemberRepository.java b/src/main/java/com/kcy/fitapet/domain/member/dao/MemberRepository.java
index 900f3fb8..36e4cfd7 100644
--- a/src/main/java/com/kcy/fitapet/domain/member/dao/MemberRepository.java
+++ b/src/main/java/com/kcy/fitapet/domain/member/dao/MemberRepository.java
@@ -10,4 +10,6 @@ public interface MemberRepository extends ExtendedRepository<Member, Long> {
     Optional<Member> findByPhone(String phone);
     boolean existsByUidOrEmailOrPhone(String uid, String email, String phone);
     boolean existsByPhone(String phone);
+    boolean existsByUid(String uid);
+    boolean existsByPhoneAndUid(String phone, String uid);
 }
diff --git a/src/main/java/com/kcy/fitapet/domain/member/exception/AccountErrorCode.java b/src/main/java/com/kcy/fitapet/domain/member/exception/AccountErrorCode.java
index 62b1f83f..3b8075fb 100644
--- a/src/main/java/com/kcy/fitapet/domain/member/exception/AccountErrorCode.java
+++ b/src/main/java/com/kcy/fitapet/domain/member/exception/AccountErrorCode.java
@@ -24,6 +24,8 @@ public enum AccountErrorCode implements StatusCode {
 
     INVALID_NOTIFICATION_TYPE_ERROR(BAD_REQUEST, "유효하지 않은 알림 타입입니다."),
 
+    MISSMATCH_PHONE_AND_UID_ERROR(BAD_REQUEST, "등록된 전화번호와 일치하지 않는 유저입니다."),
+
     /* 404 */
     NOT_FOUND_MEMBER_ERROR(NOT_FOUND, "존재하지 않는 회원입니다."),
     NOT_FOUND_PHONE_ERROR(NOT_FOUND, "존재하지 않는 전화번호입니다."),
diff --git a/src/main/java/com/kcy/fitapet/domain/member/service/component/MemberAccountService.java b/src/main/java/com/kcy/fitapet/domain/member/service/component/MemberAccountService.java
index c30a7775..5b491170 100644
--- a/src/main/java/com/kcy/fitapet/domain/member/service/component/MemberAccountService.java
+++ b/src/main/java/com/kcy/fitapet/domain/member/service/component/MemberAccountService.java
@@ -36,6 +36,11 @@ public AccountProfileRes getProfile(Long userId) {
         return AccountProfileRes.from(member);
     }
 
+    @Transactional(readOnly = true)
+    public boolean existsUid(String uid) {
+        return memberSearchService.isExistByUid(uid);
+    }
+
     @Transactional
     public void updateProfile(Long userId, ProfilePatchReq req, MemberAttrType type) {
         Member member = memberSearchService.findById(userId);
diff --git a/src/main/java/com/kcy/fitapet/domain/member/service/component/MemberAuthService.java b/src/main/java/com/kcy/fitapet/domain/member/service/component/MemberAuthService.java
index a83d4b79..bba950e3 100644
--- a/src/main/java/com/kcy/fitapet/domain/member/service/component/MemberAuthService.java
+++ b/src/main/java/com/kcy/fitapet/domain/member/service/component/MemberAuthService.java
@@ -145,12 +145,21 @@ public void checkCertificationForSearch(SmsReq req, String code, SmsPrefix prefi
     }
 
     private void validateForSms(SmsPrefix prefix, SmsReq req) {
-        if (prefix.equals(SmsPrefix.REGISTER) && memberSearchService.isExistByPhone(req.to())) {
+        boolean isExistPhone = memberSearchService.isExistByPhone(req.to());
+        if (prefix.equals(SmsPrefix.REGISTER) && isExistPhone) {
             log.warn("중복된 전화번호로 인한 회원가입 요청 실패: {}", req.to());
             throw new GlobalErrorException(AccountErrorCode.DUPLICATE_PHONE_ERROR);
-        } else if (!prefix.equals(SmsPrefix.REGISTER) && !memberSearchService.isExistByPhone(req.to())) {
+        } else if (prefix.equals(SmsPrefix.UID) && !isExistPhone) {
             log.warn("DB에 존재하지 않는 전화번호로 인한 SMS 인증 요청 실패: {}", req.to());
             throw new GlobalErrorException(AccountErrorCode.NOT_FOUND_PHONE_ERROR);
+        } else if (prefix.equals(SmsPrefix.PASSWORD)) {
+            if (!isExistPhone) {
+                log.warn("DB에 존재하지 않는 전화번호로 인한 SMS 인증 요청 실패: {}", req.to());
+                throw new GlobalErrorException(AccountErrorCode.NOT_FOUND_PHONE_ERROR);
+            } else if (!memberSearchService.isExistByPhoneAndUid(req.to(), req.uid())) {
+                log.warn("등록된 유저 전화번호와 다른 전화번호 입력: {}", req.to());
+                throw new GlobalErrorException(AccountErrorCode.MISSMATCH_PHONE_AND_UID_ERROR);
+            }
         }
     }
 
diff --git a/src/main/java/com/kcy/fitapet/domain/member/service/module/MemberSearchService.java b/src/main/java/com/kcy/fitapet/domain/member/service/module/MemberSearchService.java
index 8f403518..be663692 100644
--- a/src/main/java/com/kcy/fitapet/domain/member/service/module/MemberSearchService.java
+++ b/src/main/java/com/kcy/fitapet/domain/member/service/module/MemberSearchService.java
@@ -41,4 +41,14 @@ public boolean isExistByUidOrEmailOrPhone(String uid, String email, String phone
     public boolean isExistByPhone(String phone) {
         return memberRepository.existsByPhone(phone);
     }
+
+    @Transactional(readOnly = true)
+    public boolean isExistByUid(String uid) {
+        return memberRepository.existsByUid(uid);
+    }
+
+    @Transactional(readOnly = true)
+    public boolean isExistByPhoneAndUid(String phone, String uid) {
+        return memberRepository.existsByPhoneAndUid(phone, uid);
+    }
 }
diff --git a/src/main/java/com/kcy/fitapet/global/common/redis/sms/SmsPrefix.java b/src/main/java/com/kcy/fitapet/global/common/redis/sms/SmsPrefix.java
index 9cc0b104..08cc0bc7 100644
--- a/src/main/java/com/kcy/fitapet/global/common/redis/sms/SmsPrefix.java
+++ b/src/main/java/com/kcy/fitapet/global/common/redis/sms/SmsPrefix.java
@@ -6,14 +6,14 @@
 @Getter
 @RequiredArgsConstructor
 public enum SmsPrefix {
-    REGISTER("register@"),
-    PASSWORD("password@"),
-    UID("uid@");
+    REGISTER("register"),
+    PASSWORD("password"),
+    UID("uid");
 
     private final String prefix;
 
     public String getTopic(String phoneNumber) {
-        return this.prefix + phoneNumber;
+        return this.prefix + '@' + phoneNumber;
     }
 
     @Override
diff --git a/src/main/java/com/kcy/fitapet/global/common/response/SuccessResponse.java b/src/main/java/com/kcy/fitapet/global/common/response/SuccessResponse.java
index 7d014b7a..8bcd4af3 100644
--- a/src/main/java/com/kcy/fitapet/global/common/response/SuccessResponse.java
+++ b/src/main/java/com/kcy/fitapet/global/common/response/SuccessResponse.java
@@ -34,6 +34,11 @@ private SuccessResponse(Map<String, T> data) {
      */
     public static <T> SuccessResponse<T> from(T data) {
         String key = getDtoName(data);
+
+        if (data instanceof Map) {
+            key = ((Map<?, ?>) data).keySet().stream().findFirst().orElse(null).toString();
+            data = (T) ((Map<?, ?>) data).get(key);
+        }
         if (key == null) key = "data";
 
         return SuccessResponse.<T>builder()
diff --git a/src/main/java/com/kcy/fitapet/global/common/security/filter/JwtAuthenticationFilter.java b/src/main/java/com/kcy/fitapet/global/common/security/filter/JwtAuthenticationFilter.java
index 4688e690..9d788ae3 100644
--- a/src/main/java/com/kcy/fitapet/global/common/security/filter/JwtAuthenticationFilter.java
+++ b/src/main/java/com/kcy/fitapet/global/common/security/filter/JwtAuthenticationFilter.java
@@ -51,6 +51,7 @@ public class JwtAuthenticationFilter extends OncePerRequestFilter {
             "/api/v1/auth/refresh",
             "/api/v1/auth/register-sms/**", "/api/v1/auth/search-sms/**",
             "/api/v1/accounts/search", "/api/v1/accounts/search/**",
+            "/api/v1/accounts/exists", "/api/v1/accounts/exists/**",
 
             "/v3/api-docs/**", "/swagger-ui/**", "/swagger",
             "/favicon.ico"
diff --git a/src/main/java/com/kcy/fitapet/global/common/util/sms/dto/SmsReq.java b/src/main/java/com/kcy/fitapet/global/common/util/sms/dto/SmsReq.java
index 3e639f8d..e0b3a8a0 100644
--- a/src/main/java/com/kcy/fitapet/global/common/util/sms/dto/SmsReq.java
+++ b/src/main/java/com/kcy/fitapet/global/common/util/sms/dto/SmsReq.java
@@ -13,6 +13,8 @@
 public record SmsReq(
         @Schema(description = "수신번호")
         @NotNull(message = "수신번호는 필수 입력값입니다.")
-        String to
+        String to,
+        @Schema(description = "아이디")
+        String uid
 ) {
 }
diff --git a/src/main/java/com/kcy/fitapet/global/config/security/SecurityConfig.java b/src/main/java/com/kcy/fitapet/global/config/security/SecurityConfig.java
index d8c829ec..c267d7bb 100644
--- a/src/main/java/com/kcy/fitapet/global/config/security/SecurityConfig.java
+++ b/src/main/java/com/kcy/fitapet/global/config/security/SecurityConfig.java
@@ -39,9 +39,10 @@ public class SecurityConfig {
             // API
             "/api/v1/auth/register", "/api/v1/auth/login", "/api/v1/auth/refresh",
             "/api/v1/auth/register-sms/**", "/api/v1/auth/search-sms/**",
-            "/api/v1/accounts/search", "/api/v1/accounts/search/**"
+            "/api/v1/accounts/search", "/api/v1/accounts/search/**",
     };
     private static final String[] publicReadOnlyPublicEndpoints = {
+            "/api/v1/accounts/exists", "/api/v1/accounts/exists/**"
     };
 
     @Bean