diff --git a/src/main/java/com/example/letscareer/self_intro/controller/SelfIntroController.java b/src/main/java/com/example/letscareer/self_intro/controller/SelfIntroController.java
index 611d85d..07cf34c 100644
--- a/src/main/java/com/example/letscareer/self_intro/controller/SelfIntroController.java
+++ b/src/main/java/com/example/letscareer/self_intro/controller/SelfIntroController.java
@@ -6,7 +6,7 @@
 import com.example.letscareer.common.exception.enums.SuccessCode;
 import com.example.letscareer.common.exception.model.BadRequestException;
 import com.example.letscareer.common.exception.model.NotFoundException;
-import com.example.letscareer.self_intro.dto.SaveSelfIntroRequest;
+import com.example.letscareer.self_intro.dto.request.SaveSelfIntroRequest;
 import com.example.letscareer.self_intro.service.SelfIntroService;
 import lombok.RequiredArgsConstructor;
 import org.springframework.web.bind.annotation.*;
@@ -17,7 +17,7 @@ public class SelfIntroController {
 
     private final SelfIntroService selfIntroService;
 
-    @PostMapping("/schedules/{scheduleId}/stages/{stageId}/self-intro")
+    @PutMapping("/schedules/{scheduleId}/stages/{stageId}/self-intro")
     public ApiResponse saveSelfIntro(
             @RequestHeader("userId") Long userId,
             @PathVariable Long scheduleId,
diff --git a/src/main/java/com/example/letscareer/self_intro/domain/SelfIntro.java b/src/main/java/com/example/letscareer/self_intro/domain/SelfIntro.java
index 251d20e..2a8322c 100644
--- a/src/main/java/com/example/letscareer/self_intro/domain/SelfIntro.java
+++ b/src/main/java/com/example/letscareer/self_intro/domain/SelfIntro.java
@@ -17,10 +17,14 @@ public class SelfIntro {
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long selfIntroId;
 
+    private String title;
+
+    private int sequence;
+
     @Lob
     private String content;
 
-    @OneToOne(fetch = FetchType.LAZY)
+    @ManyToOne(fetch = FetchType.LAZY)
     @JoinColumn(name = "stageId")
     @NotNull
     private Stage stage;
diff --git a/src/main/java/com/example/letscareer/self_intro/dto/SaveSelfIntroRequest.java b/src/main/java/com/example/letscareer/self_intro/dto/SaveSelfIntroRequest.java
deleted file mode 100644
index 0fadb70..0000000
--- a/src/main/java/com/example/letscareer/self_intro/dto/SaveSelfIntroRequest.java
+++ /dev/null
@@ -1,6 +0,0 @@
-package com.example.letscareer.self_intro.dto;
-
-public record SaveSelfIntroRequest(
-        String content
-) {
-}
diff --git a/src/main/java/com/example/letscareer/self_intro/dto/SelfIntroDTO.java b/src/main/java/com/example/letscareer/self_intro/dto/SelfIntroDTO.java
new file mode 100644
index 0000000..3b4dfef
--- /dev/null
+++ b/src/main/java/com/example/letscareer/self_intro/dto/SelfIntroDTO.java
@@ -0,0 +1,7 @@
+package com.example.letscareer.self_intro.dto;
+
+public record SelfIntroDTO(
+        String title,
+        int sequence,
+        String content) {
+}
diff --git a/src/main/java/com/example/letscareer/self_intro/dto/request/SaveSelfIntroRequest.java b/src/main/java/com/example/letscareer/self_intro/dto/request/SaveSelfIntroRequest.java
new file mode 100644
index 0000000..1272738
--- /dev/null
+++ b/src/main/java/com/example/letscareer/self_intro/dto/request/SaveSelfIntroRequest.java
@@ -0,0 +1,10 @@
+package com.example.letscareer.self_intro.dto.request;
+
+import com.example.letscareer.self_intro.dto.SelfIntroDTO;
+
+import java.util.List;
+
+public record SaveSelfIntroRequest(
+        List<SelfIntroDTO> selfIntros
+) {
+}
diff --git a/src/main/java/com/example/letscareer/self_intro/repository/SelfIntroRepository.java b/src/main/java/com/example/letscareer/self_intro/repository/SelfIntroRepository.java
index 3563b21..dbd33af 100644
--- a/src/main/java/com/example/letscareer/self_intro/repository/SelfIntroRepository.java
+++ b/src/main/java/com/example/letscareer/self_intro/repository/SelfIntroRepository.java
@@ -1,9 +1,11 @@
 package com.example.letscareer.self_intro.repository;
 
 import com.example.letscareer.self_intro.domain.SelfIntro;
+import com.example.letscareer.stage.domain.Stage;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Repository;
 
 @Repository
 public interface SelfIntroRepository extends JpaRepository<SelfIntro, Long> {
+    void deleteByStage(Stage stage);
 }
diff --git a/src/main/java/com/example/letscareer/self_intro/service/SelfIntroService.java b/src/main/java/com/example/letscareer/self_intro/service/SelfIntroService.java
index 29f15c2..033c6a0 100644
--- a/src/main/java/com/example/letscareer/self_intro/service/SelfIntroService.java
+++ b/src/main/java/com/example/letscareer/self_intro/service/SelfIntroService.java
@@ -4,7 +4,8 @@
 import com.example.letscareer.schedule.domain.Schedule;
 import com.example.letscareer.schedule.repository.ScheduleRepository;
 import com.example.letscareer.self_intro.domain.SelfIntro;
-import com.example.letscareer.self_intro.dto.SaveSelfIntroRequest;
+import com.example.letscareer.self_intro.dto.SelfIntroDTO;
+import com.example.letscareer.self_intro.dto.request.SaveSelfIntroRequest;
 import com.example.letscareer.self_intro.repository.SelfIntroRepository;
 import com.example.letscareer.stage.domain.Stage;
 import com.example.letscareer.stage.repository.StageRepository;
@@ -14,7 +15,6 @@
 import lombok.RequiredArgsConstructor;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
-
 import static com.example.letscareer.common.exception.enums.ErrorCode.*;
 
 @Service
@@ -36,11 +36,18 @@ public void saveSelfIntro(Long userId, Long scheduleId, Long stageId, SaveSelfIn
         User user = userRepository.findById(userId)
                 .orElseThrow(() -> new NotFoundException(USER_NOT_FOUND_EXCEPTION));
 
-        SelfIntro selfIntro = SelfIntro.builder()
-                        .stage(stage)
-                        .content(request.content())
-                        .build();
+        // 현재 stage에 있는 모든 SelfIntro를 삭제한다.
+        selfIntroRepository.deleteByStage(stage);
 
-        selfIntroRepository.save(selfIntro);
+        // 새로 들어온 자기소개서 항목을 저장한다.
+        for (SelfIntroDTO selfIntroDTO : request.selfIntros()) {
+            SelfIntro selfIntro = SelfIntro.builder()
+                    .title(selfIntroDTO.title())
+                    .sequence(selfIntroDTO.sequence())
+                    .content(selfIntroDTO.content())
+                    .stage(stage)
+                    .build();
+            selfIntroRepository.save(selfIntro);
+        }
     }
 }