diff --git a/mashup-domain/src/main/java/kr/mashup/branding/service/member/MemberService.java b/mashup-domain/src/main/java/kr/mashup/branding/service/member/MemberService.java
index cd0dd90b..fe720390 100644
--- a/mashup-domain/src/main/java/kr/mashup/branding/service/member/MemberService.java
+++ b/mashup-domain/src/main/java/kr/mashup/branding/service/member/MemberService.java
@@ -1,5 +1,16 @@
 package kr.mashup.branding.service.member;
 
+import java.time.LocalDate;
+import java.util.Comparator;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.stereotype.Service;
+
 import kr.mashup.branding.domain.ResultCode;
 import kr.mashup.branding.domain.exception.BadRequestException;
 import kr.mashup.branding.domain.exception.GenerationIntegrityFailException;
@@ -23,16 +34,6 @@
 import kr.mashup.branding.util.DateUtil;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
-import org.springframework.beans.factory.annotation.Qualifier;
-import org.springframework.data.domain.Page;
-import org.springframework.data.domain.Pageable;
-import org.springframework.security.crypto.password.PasswordEncoder;
-import org.springframework.stereotype.Service;
-
-import java.time.LocalDate;
-import java.util.Comparator;
-import java.util.List;
-import java.util.stream.Collectors;
 
 @Service
 @Slf4j
@@ -217,6 +218,10 @@ public Long getTotalCountByPlatformAndGeneration(
         return memberRepository.countActiveByPlatformAndGeneration(platform, generation);
     }
 
+    public boolean existsIdentification(String identification) {
+        return memberRepository.existsByIdentification(identification);
+    }
+
     private void checkAllActiveStatus(List<Member> members) {
         for(Member member : members){
             if (member.getStatus() != MemberStatus.ACTIVE) {
diff --git a/mashup-member/src/main/java/kr/mashup/branding/facade/member/MemberFacadeService.java b/mashup-member/src/main/java/kr/mashup/branding/facade/member/MemberFacadeService.java
index 304c6473..35e8739e 100644
--- a/mashup-member/src/main/java/kr/mashup/branding/facade/member/MemberFacadeService.java
+++ b/mashup-member/src/main/java/kr/mashup/branding/facade/member/MemberFacadeService.java
@@ -1,5 +1,12 @@
 package kr.mashup.branding.facade.member;
 
+import java.time.LocalDateTime;
+import java.util.Comparator;
+import java.util.List;
+
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
 import kr.mashup.branding.domain.exception.GenerationIntegrityFailException;
 import kr.mashup.branding.domain.generation.Generation;
 import kr.mashup.branding.domain.invite.Invite;
@@ -14,15 +21,19 @@
 import kr.mashup.branding.service.invite.InviteService;
 import kr.mashup.branding.service.member.MemberService;
 import kr.mashup.branding.service.scorehistory.ScoreHistoryService;
-import kr.mashup.branding.ui.member.request.*;
-import kr.mashup.branding.ui.member.response.*;
+import kr.mashup.branding.ui.member.request.LoginRequest;
+import kr.mashup.branding.ui.member.request.MemberGenerationRequest;
+import kr.mashup.branding.ui.member.request.MemberPasswordChangeRequest;
+import kr.mashup.branding.ui.member.request.PushNotificationRequest;
+import kr.mashup.branding.ui.member.request.SignUpRequest;
+import kr.mashup.branding.ui.member.request.ValidInviteRequest;
+import kr.mashup.branding.ui.member.response.AccessResponse;
+import kr.mashup.branding.ui.member.response.ExistsResponse;
+import kr.mashup.branding.ui.member.response.MemberGenerationsResponse;
+import kr.mashup.branding.ui.member.response.MemberInfoResponse;
+import kr.mashup.branding.ui.member.response.TokenResponse;
+import kr.mashup.branding.ui.member.response.ValidResponse;
 import lombok.RequiredArgsConstructor;
-import org.springframework.stereotype.Service;
-import org.springframework.transaction.annotation.Transactional;
-
-import java.time.LocalDateTime;
-import java.util.Comparator;
-import java.util.List;
 
 
 @Service
@@ -121,6 +132,12 @@ public ValidResponse checkDuplicatedIdentification(String identification) {
         return ValidResponse.of(!isExist);
     }
 
+    @Transactional(readOnly = true)
+    public ExistsResponse existsIdentification(String identification) {
+        boolean isExist = memberService.existsIdentification(identification);
+        return ExistsResponse.of(isExist);
+    }
+
     @Transactional
     public Boolean updatePushNotificationAgreed(Long memberId, PushNotificationRequest request) {
         Member member = memberService.getActiveOrThrowById(memberId);
@@ -150,6 +167,14 @@ public Boolean updateMemberGenerationById(
         return true;
     }
 
+    @Transactional
+    public void changePassword(
+        String identification,
+        MemberPasswordChangeRequest request
+    ) {
+        memberService.resetPassword(identification, request.getNewPassword());
+    }
+
     private MemberGeneration getLatestMemberGeneration(Member member) {
         return member.getMemberGenerations().stream().min(Comparator.comparing(
             memberGeneration -> memberGeneration.getGeneration().getNumber()
diff --git a/mashup-member/src/main/java/kr/mashup/branding/ui/member/MemberController.java b/mashup-member/src/main/java/kr/mashup/branding/ui/member/MemberController.java
index 0728a0f7..aecce823 100644
--- a/mashup-member/src/main/java/kr/mashup/branding/ui/member/MemberController.java
+++ b/mashup-member/src/main/java/kr/mashup/branding/ui/member/MemberController.java
@@ -1,18 +1,35 @@
 package kr.mashup.branding.ui.member;
 
+import javax.validation.Valid;
+
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PatchMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
 import io.swagger.annotations.ApiOperation;
 import kr.mashup.branding.facade.member.MemberFacadeService;
 import kr.mashup.branding.security.MemberAuth;
 import kr.mashup.branding.ui.ApiResponse;
 import kr.mashup.branding.ui.EmptyResponse;
-import kr.mashup.branding.ui.member.request.*;
-import kr.mashup.branding.ui.member.response.*;
+import kr.mashup.branding.ui.member.request.LoginRequest;
+import kr.mashup.branding.ui.member.request.MemberPasswordChangeRequest;
+import kr.mashup.branding.ui.member.request.PushNotificationRequest;
+import kr.mashup.branding.ui.member.request.SignUpRequest;
+import kr.mashup.branding.ui.member.request.ValidInviteRequest;
+import kr.mashup.branding.ui.member.response.AccessResponse;
+import kr.mashup.branding.ui.member.response.ExistsResponse;
+import kr.mashup.branding.ui.member.response.MemberInfoResponse;
+import kr.mashup.branding.ui.member.response.TokenResponse;
+import kr.mashup.branding.ui.member.response.ValidResponse;
 import lombok.RequiredArgsConstructor;
-import org.springframework.web.bind.annotation.*;
 import springfox.documentation.annotations.ApiIgnore;
 
-import javax.validation.Valid;
-
 @RestController
 @RequestMapping("api/v1/members")
 @RequiredArgsConstructor
@@ -103,4 +120,26 @@ public ApiResponse<Boolean> updatePushNotificationAgreed(
 
         return ApiResponse.success(updatePushNotificationAgreedResponse);
     }
+
+    @ApiOperation("ID 존재 여부 조회")
+    @GetMapping("{id}/exists")
+    public ApiResponse<ExistsResponse> existsIdentification(
+        @PathVariable String id
+    ) {
+        final ExistsResponse response
+            = memberFacadeService.existsIdentification(id);
+
+        return ApiResponse.success(response);
+    }
+
+    @ApiOperation("비밀번호 변경")
+    @PutMapping("/{id}/password")
+    public ApiResponse<EmptyResponse> changePassword(
+        @PathVariable String id,
+        @RequestBody MemberPasswordChangeRequest request
+    ){
+        memberFacadeService.changePassword(id, request);
+
+        return ApiResponse.success();
+    }
 }
diff --git a/mashup-member/src/main/java/kr/mashup/branding/ui/member/request/MemberPasswordChangeRequest.java b/mashup-member/src/main/java/kr/mashup/branding/ui/member/request/MemberPasswordChangeRequest.java
new file mode 100644
index 00000000..25f3bcae
--- /dev/null
+++ b/mashup-member/src/main/java/kr/mashup/branding/ui/member/request/MemberPasswordChangeRequest.java
@@ -0,0 +1,8 @@
+package kr.mashup.branding.ui.member.request;
+
+import lombok.Getter;
+
+@Getter
+public class MemberPasswordChangeRequest {
+    private String newPassword;
+}
diff --git a/mashup-member/src/main/java/kr/mashup/branding/ui/member/response/ExistsResponse.java b/mashup-member/src/main/java/kr/mashup/branding/ui/member/response/ExistsResponse.java
new file mode 100644
index 00000000..a261b625
--- /dev/null
+++ b/mashup-member/src/main/java/kr/mashup/branding/ui/member/response/ExistsResponse.java
@@ -0,0 +1,13 @@
+package kr.mashup.branding.ui.member.response;
+
+import lombok.AccessLevel;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+@AllArgsConstructor(staticName = "of")
+public class ExistsResponse {
+	private boolean exists;
+}