diff --git a/src/api/character.js b/src/api/character.js
index 8a824f4..20cec09 100644
--- a/src/api/character.js
+++ b/src/api/character.js
@@ -57,36 +57,15 @@ async function createCharacter(characterData) {
 }
 
 // 캐릭터 수정
-async function updateCharacter(characterData) {
+async function updateCharacter(characterData, image = null) {
   const formData = new FormData()
 
-  // 이미지만 FormData에 추가
-  if (characterData.image) formData.append('image', characterData.image)
+  // 이미지가 있는 경우에만 FormData에 추가
+  if (image) formData.append('image', image)
 
-  // 나머지 데이터는 JSON 문자열로 변환하여 request 필드에 추가
-  const requestData = {
-    id: characterData.id,
-    name: characterData.name,
-    systemPrompt: characterData.systemPrompt,
-    description: characterData.description,
-    age: characterData.age,
-    gender: characterData.gender,
-    mbti: characterData.mbti,
-    speechPattern: characterData.speechPattern,
-    speechStyle: characterData.conversationStyle,
-    appearance: characterData.appearance,
-    tags: characterData.tags || [],
-    hobbies: characterData.hobbies || [],
-    values: characterData.values || [],
-    goals: characterData.goals || [],
-    relationships: characterData.relationships || [],
-    personalities: characterData.personalities || [],
-    backgrounds: characterData.backgrounds || [],
-    memories: characterData.memories || [],
-    isActive: characterData.isActive
-  }
-
-  formData.append('request', JSON.stringify(requestData))
+  // 변경된 데이터만 JSON 문자열로 변환하여 request 필드에 추가
+  // characterData는 이미 변경된 필드만 포함하고 있음
+  formData.append('request', JSON.stringify(characterData))
 
   return Vue.axios.put(`/admin/chat/character/update`, formData, {
     headers: {
diff --git a/src/views/Chat/CharacterForm.vue b/src/views/Chat/CharacterForm.vue
index 3c4e397..504cab5 100644
--- a/src/views/Chat/CharacterForm.vue
+++ b/src/views/Chat/CharacterForm.vue
@@ -914,6 +914,7 @@ export default {
       goals: [],
       personalities: [],
       backgrounds: [],
+      originalCharacter: null, // 원본 캐릭터 데이터 저장용
       character: {
         id: null,
         name: '',
@@ -1233,6 +1234,97 @@ export default {
       this.backgrounds.splice(index, 1);
     },
 
+    // 변경된 필드만 추출하는 함수
+    getChangedFields() {
+      if (!this.originalCharacter || !this.isEdit) {
+        // 신규 등록인 경우 또는 원본 데이터가 없는 경우 전체 데이터 반환
+        return {
+          name: this.character.name,
+          systemPrompt: this.character.systemPrompt,
+          description: this.character.description,
+          age: this.character.age,
+          gender: this.character.gender,
+          mbti: this.character.mbti,
+          speechPattern: this.character.speechPattern,
+          speechStyle: this.character.conversationStyle,
+          appearance: this.character.appearance,
+          tags: this.character.tags || [],
+          hobbies: this.character.hobbies || [],
+          values: this.character.values || [],
+          goals: this.character.goals || [],
+          relationships: this.character.relationships || [],
+          personalities: this.character.personalities || [],
+          backgrounds: this.character.backgrounds || [],
+          memories: this.character.memories || [],
+          isActive: this.character.isActive
+        };
+      }
+
+      // 변경된 필드만 포함하는 객체
+      const changedFields = {
+        id: this.character.id // ID는 항상 포함
+      };
+
+      // 기본 필드 비교
+      const simpleFields = [
+        'name', 'description', 'age', 'gender', 'mbti',
+        'speechPattern', 'isActive'
+      ];
+
+      simpleFields.forEach(field => {
+        if (this.character[field] !== this.originalCharacter[field]) {
+          changedFields[field] = this.character[field];
+        }
+      });
+
+      // 특수 필드 매핑 처리 (conversationStyle은 API에서 speechStyle로 사용됨)
+      if (this.character.conversationStyle !== this.originalCharacter.conversationStyle) {
+        changedFields.speechStyle = this.character.conversationStyle;
+      }
+
+      if (this.character.systemPrompt !== this.originalCharacter.systemPrompt) {
+        changedFields.systemPrompt = this.character.systemPrompt;
+      }
+
+      if (this.character.appearance !== this.originalCharacter.appearance) {
+        changedFields.appearance = this.character.appearance;
+      }
+
+      // 배열 필드 비교 (깊은 비교)
+      const arrayFields = [
+        'tags', 'hobbies', 'values', 'goals', 'relationships'
+      ];
+
+      arrayFields.forEach(field => {
+        const original = this.originalCharacter[field] || [];
+        const current = this.character[field] || [];
+
+        // 길이가 다르거나 내용이 다른 경우
+        if (original.length !== current.length ||
+            JSON.stringify(original) !== JSON.stringify(current)) {
+          changedFields[field] = current;
+        }
+      });
+
+      // 복잡한 객체 배열 비교
+      const objectArrayFields = [
+        'personalities', 'backgrounds', 'memories'
+      ];
+
+      objectArrayFields.forEach(field => {
+        const original = this.originalCharacter[field] || [];
+        const current = this.character[field] || [];
+
+        // 길이가 다르거나 내용이 다른 경우
+        if (original.length !== current.length ||
+            JSON.stringify(original) !== JSON.stringify(current)) {
+          changedFields[field] = current;
+        }
+      });
+
+      return changedFields;
+    },
+
     async loadCharacter(id) {
       this.isLoading = true;
       try {
@@ -1242,6 +1334,9 @@ export default {
         if (response && response.data) {
           const data = response.data;
 
+          // 원본 데이터 저장 (깊은 복사)
+          this.originalCharacter = JSON.parse(JSON.stringify(data));
+
           // 기본 데이터 설정
           this.character = {
             ...this.character, // 기본 구조 유지
@@ -1293,9 +1388,15 @@ export default {
         let response;
 
         if (this.isEdit) {
-          response = await updateCharacter(this.character);
+          // 수정 시 변경된 필드만 전송
+          const changedData = this.getChangedFields();
+          console.log('변경된 필드만 전송:', changedData);
+          response = await updateCharacter(changedData, this.character.image);
         } else {
-          response = await createCharacter(this.character);
+          // 신규 등록 시 ID 필드를 제외한 데이터 전송
+          const characterWithoutId = { ...this.character };
+          delete characterWithoutId.id;
+          response = await createCharacter(characterWithoutId);
         }
 
         if (response && response.data) {