diff --git a/src/main/java/kr/co/fastcampus/yanabada/common/exception/PasswordConfirmationException.java b/src/main/java/kr/co/fastcampus/yanabada/common/exception/PasswordConfirmationException.java
new file mode 100644
index 00000000..3cf6646d
--- /dev/null
+++ b/src/main/java/kr/co/fastcampus/yanabada/common/exception/PasswordConfirmationException.java
@@ -0,0 +1,9 @@
+package kr.co.fastcampus.yanabada.common.exception;
+
+import static kr.co.fastcampus.yanabada.common.response.ErrorCode.PASSWORD_CONFIRMATION_DOES_NOT_MATCH;
+
+public class PasswordConfirmationException extends BaseException {
+    public PasswordConfirmationException() {
+        super(PASSWORD_CONFIRMATION_DOES_NOT_MATCH.getMessage());
+    }
+}
diff --git a/src/main/java/kr/co/fastcampus/yanabada/common/response/ErrorCode.java b/src/main/java/kr/co/fastcampus/yanabada/common/response/ErrorCode.java
index 387d0f00..eb2fa291 100644
--- a/src/main/java/kr/co/fastcampus/yanabada/common/response/ErrorCode.java
+++ b/src/main/java/kr/co/fastcampus/yanabada/common/response/ErrorCode.java
@@ -31,6 +31,7 @@ public enum ErrorCode {
     CANNOT_NEGOTIATE_OWN_PRODUCT("자신이 등록한 상품을 네고할 순 없습니다."),
     CHAT_ROOM_NOT_FOUND_EXCEPTION("존재하지 않은 채팅방입니다."),
     INCORRECT_CHAT_ROOM_MEMBER("채팅방 멤버가 올바르지 않습니다."),
+    PASSWORD_CONFIRMATION_DOES_NOT_MATCH("입력한 비밀번호가 서로 일치하지 않습니다."),
 
     EMAIL_SEND_FAILED("이메일 전송에 실패하였습니다."),
 
diff --git a/src/main/java/kr/co/fastcampus/yanabada/domain/payment/controller/YanoljaPayController.java b/src/main/java/kr/co/fastcampus/yanabada/domain/payment/controller/YanoljaPayController.java
index 991254bb..736f881e 100644
--- a/src/main/java/kr/co/fastcampus/yanabada/domain/payment/controller/YanoljaPayController.java
+++ b/src/main/java/kr/co/fastcampus/yanabada/domain/payment/controller/YanoljaPayController.java
@@ -1,11 +1,15 @@
 package kr.co.fastcampus.yanabada.domain.payment.controller;
 
+import jakarta.validation.Valid;
 import kr.co.fastcampus.yanabada.common.response.ResponseBody;
+import kr.co.fastcampus.yanabada.domain.payment.dto.request.PayPasswordSaveRequest;
 import kr.co.fastcampus.yanabada.domain.payment.dto.response.YanoljaPayHomeResponse;
 import kr.co.fastcampus.yanabada.domain.payment.service.YanoljaPayService;
 import lombok.RequiredArgsConstructor;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
@@ -20,5 +24,14 @@ public class YanoljaPayController {
     public ResponseBody<YanoljaPayHomeResponse> getYanoljaPay(@PathVariable Long memberId) {
         return ResponseBody.ok(yanoljaPayService.getYanoljaPay(memberId));
     }
+
+    @PostMapping("/pay-password/{memberId}")
+    public ResponseBody<Void> setPayPassword(
+        @PathVariable("memberId") Long memberId,
+        @RequestBody @Valid PayPasswordSaveRequest payPasswordSaveRequest
+    ) {
+        yanoljaPayService.setPayPassword(memberId, payPasswordSaveRequest);
+        return ResponseBody.ok();
+    }
 }
 
diff --git a/src/main/java/kr/co/fastcampus/yanabada/domain/payment/dto/request/PayPasswordSaveRequest.java b/src/main/java/kr/co/fastcampus/yanabada/domain/payment/dto/request/PayPasswordSaveRequest.java
new file mode 100644
index 00000000..8854dbef
--- /dev/null
+++ b/src/main/java/kr/co/fastcampus/yanabada/domain/payment/dto/request/PayPasswordSaveRequest.java
@@ -0,0 +1,19 @@
+package kr.co.fastcampus.yanabada.domain.payment.dto.request;
+
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Pattern;
+import lombok.Builder;
+
+@Builder
+public record PayPasswordSaveRequest(
+    @NotBlank(message = "패스워드는 공백일 수 없습니다.")
+    @Pattern(regexp = "\\d{6}", message = "패스워드는 6글자이어야 합니다.")
+    String password,
+    @NotBlank(message = "확인용 패스워드도 공백일 수 없습니다.")
+    String confirmPassword
+) {
+
+    public boolean isPasswordMatch() {
+        return this.password.equals(this.confirmPassword);
+    }
+}
diff --git a/src/main/java/kr/co/fastcampus/yanabada/domain/payment/entity/YanoljaPay.java b/src/main/java/kr/co/fastcampus/yanabada/domain/payment/entity/YanoljaPay.java
index a8a1ca00..11444e64 100644
--- a/src/main/java/kr/co/fastcampus/yanabada/domain/payment/entity/YanoljaPay.java
+++ b/src/main/java/kr/co/fastcampus/yanabada/domain/payment/entity/YanoljaPay.java
@@ -93,4 +93,8 @@ public static YanoljaPay create(
             balance
         );
     }
+
+    public void savePassword(String password) {
+        this.simplePassword = password;
+    }
 }
\ No newline at end of file
diff --git a/src/main/java/kr/co/fastcampus/yanabada/domain/payment/repository/YanoljaPayRepository.java b/src/main/java/kr/co/fastcampus/yanabada/domain/payment/repository/YanoljaPayRepository.java
index 7e8d7ad9..da8a8685 100644
--- a/src/main/java/kr/co/fastcampus/yanabada/domain/payment/repository/YanoljaPayRepository.java
+++ b/src/main/java/kr/co/fastcampus/yanabada/domain/payment/repository/YanoljaPayRepository.java
@@ -1,11 +1,17 @@
 package kr.co.fastcampus.yanabada.domain.payment.repository;
 
+import io.lettuce.core.dynamic.annotation.Param;
+import jakarta.validation.constraints.Pattern;
 import java.util.Optional;
 import kr.co.fastcampus.yanabada.domain.member.entity.Member;
 import kr.co.fastcampus.yanabada.domain.payment.entity.YanoljaPay;
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
 
 public interface YanoljaPayRepository extends JpaRepository<YanoljaPay, Long> {
+
     Optional<YanoljaPay> findByMember(Member member);
+
 }
 
diff --git a/src/main/java/kr/co/fastcampus/yanabada/domain/payment/service/YanoljaPayService.java b/src/main/java/kr/co/fastcampus/yanabada/domain/payment/service/YanoljaPayService.java
index 8e8f2acb..70c77955 100644
--- a/src/main/java/kr/co/fastcampus/yanabada/domain/payment/service/YanoljaPayService.java
+++ b/src/main/java/kr/co/fastcampus/yanabada/domain/payment/service/YanoljaPayService.java
@@ -1,8 +1,11 @@
 package kr.co.fastcampus.yanabada.domain.payment.service;
 
+import kr.co.fastcampus.yanabada.common.exception.MemberNotFoundException;
+import kr.co.fastcampus.yanabada.common.exception.PasswordConfirmationException;
 import kr.co.fastcampus.yanabada.common.exception.YanoljaPayNotFoundException;
 import kr.co.fastcampus.yanabada.domain.member.entity.Member;
 import kr.co.fastcampus.yanabada.domain.member.repository.MemberRepository;
+import kr.co.fastcampus.yanabada.domain.payment.dto.request.PayPasswordSaveRequest;
 import kr.co.fastcampus.yanabada.domain.payment.dto.response.YanoljaPayHomeResponse;
 import kr.co.fastcampus.yanabada.domain.payment.entity.YanoljaPay;
 import kr.co.fastcampus.yanabada.domain.payment.repository.YanoljaPayRepository;
@@ -30,4 +33,17 @@ private YanoljaPayHomeResponse getYanoljaPay(Member member) {
 
         return YanoljaPayHomeResponse.from(yanoljaPay);
     }
+
+    @Transactional
+    public void setPayPassword(Long memberId, PayPasswordSaveRequest payPasswordSaveRequest) {
+        if (!payPasswordSaveRequest.isPasswordMatch()) {
+            throw new PasswordConfirmationException();
+        }
+
+        Member member = memberRepository.getMember(memberId);
+        YanoljaPay yanoljaPay = yanoljaPayRepository.findByMember(member)
+            .orElseThrow(YanoljaPayNotFoundException::new);
+
+        yanoljaPay.savePassword(payPasswordSaveRequest.password());
+    }
 }
\ No newline at end of file