diff --git a/src/pages/app/contractUpdate.vue b/src/pages/app/contractUpdate.vue
index 048541e..07cf87b 100644
--- a/src/pages/app/contractUpdate.vue
+++ b/src/pages/app/contractUpdate.vue
@@ -1,7 +1,7 @@
 <script setup lang="ts">
 
 import axios from 'axios'
-import {getContractDetail, saveContract} from "/@src/service/contractApi.ts";
+import {delContAttachFile, getContractDetail, saveContract, updateContract} from "/@src/service/contractApi.ts";
 import type {iPbAtt} from "/@src/utils/types.ts";
 import {useRouter} from "vue-router";
 import {signStart} from "/@src/service/signDocApi.ts";
@@ -76,9 +76,7 @@ params.modalColumn = [
   { key: 'regNm', label: '선택' },
 ]
 
-params.contAtts = [
-  { prcsNo : '', bizNo : '' ,fileOrd : 0 ,logiFnm : '' ,physFnm : '',size : 0 ,data : '' ,path : '' },
-]
+params.contAtts = []
 
 const data = reactive({
   contractData: [],
@@ -209,14 +207,49 @@ const fileInputs = ref([
   { file: null, description: '인지세 납부확인서' },
 ])
 
-const saveContOne = async () => {
+const updateContOne = async () => {
   let res = null
   try{
     loading.value = true
 
+    const changeFileOrd = []
+    const conAtts = fileInputs.value.map((input, idx) => {
+      // console.log(fileInputs)
+      if(pbAtts.value[idx]) {
+        // console.log('pbAtts.value[idx]', pbAtts.value[idx])
+        changeFileOrd.push(idx)
+        return pbAtts.value[idx]
+      } else if(params.contAtts[idx]) {
+        // console.log('params.contAtts[idx]', params.contAtts[idx])
+        return params.contAtts[idx]
+      } else {
+        return null
+      }
+    })
+    console.log('conAtts', conAtts)
+
+    const paramsCont ={
+      contNo: params.contNo || '',
+      bizNo: completedPriceDataParams.bizNo,
+      prcsNo: completedPriceDataParams.prcsNo || '',
+      compNm: completedPriceDataParams.compNm,
+      contAmt: completedPriceDataParams.contAmt,
+      cateCd: priceSearchCheckBoxStatus.value ? selectedCode.value : completedPriceDataParams.cateCd,
+      title: completedPriceDataParams.title,
+      signDt: formatMonthDate(completedPriceDataParams.signDt),
+      contSdat: formatMonthDate(completedPriceDataParams.contSdat),
+      contEdat: formatMonthDate(completedPriceDataParams.contEdat),
+      reason: completedPriceDataParams.reason || '',
+      excYn: priceSearchCheckBoxStatus.value, // 가격조사 예외여부 확인필요
+      contAtts: conAtts,
+    }
+    console.log(pbAtts)
+    console.log(paramsCont.contAtts)
+
     const amt = Number(String(completedPriceDataParams.contAmt).replace(/[^0-9]/g, ''))
     if (amt >= 10000000) {
-      const injiFile = pbAtts.value[6]
+      const injiIdx = fileInputs.value.findIndex(input => input.description === '인지세 납부확인서');
+      const injiFile = injiIdx !== -1 ? paramsCont.contAtts[injiIdx] : null;
       if (!injiFile || !injiFile.logiFnm) {
         notyf.error('계약금액이 1,000만원 이상일 경우 인지세 납부확인서 첨부가 필수입니다.')
         loading.value = false
@@ -224,22 +257,30 @@ const saveContOne = async () => {
       }
     }
 
-    const paramsCont ={
-      prcsNo: completedPriceDataParams.prcsNo,
-      bizNo: completedPriceDataParams.bizNo,
-      cateCd: priceSearchCheckBoxStatus.value ? selectedCode.value : completedPriceDataParams.cateCd,
-      compNm: completedPriceDataParams.compNm,
-      title: completedPriceDataParams.title,
-      contSdat: formatMonthDate(completedPriceDataParams.contSdat),
-      contEdat: formatMonthDate(completedPriceDataParams.contEdat),
-      contAmt: completedPriceDataParams.contAmt,
-      signDt: formatMonthDate(completedPriceDataParams.signDt),
-      reason: completedPriceDataParams.reason,
-      excYn: priceSearchCheckBoxStatus.value, // 가격조사 예외여부 확인필요
-      contAtts: params.contAtts,
+    console.log('changeFileOrd', changeFileOrd)
+
+    // 첨부파일 삭제
+    for(const idx of changeFileOrd) {
+      const file = params.contAtts[idx]
+      if(file){
+        const delParam = [{
+          contNo: file.contNo,
+          fileOrd: file.fileOrd,
+        }]
+        console.log('delParam',delParam)
+        // await delContAttachFile(file)
+      }
     }
-    console.log(pbAtts)
-    res = await saveContract(paramsCont)
+
+    // 기존 첨부파일 전체 삭제
+    // for (const file of params.contAtts) {
+    //   if (file && file.fileOrd !== undefined) {
+    //     await delContAttachFile(file) // 서버 파일 삭제 API 호출
+    //   }
+    // }
+
+
+    res = await updateContract(paramsCont)
 
     if(res.request.status == '200'){
       notyf.primary('등록 되었습니다.')
@@ -254,13 +295,6 @@ const saveContOne = async () => {
 
 const pbAtts = ref<iPbAtt[]>(params.contAtts)
 
-watch(
-    () => params.contAtts,
-    (newContAtts) => {
-      pbAtts.value = newContAtts.map(() => null)
-    },
-    { immediate: true, deep: true }
-)
 const onFileChange = (e, idx) => {
   const file = e.target.files[0]
   if (!file) return
@@ -268,15 +302,14 @@ const onFileChange = (e, idx) => {
   reader.onload = () => {
     const result = reader.result
     const pbAtt = {
-      prcsNo: completedPriceDataParams.prcsNo,
+      contNo: completedPriceDataParams.contNo,
+      fileOrd: idx + 1,
       logiFnm: file.name,
       size: file.size,
       data: result.split(',')[1],
     }
     // 인덱스별로 파일 저장
     pbAtts.value[idx] = pbAtt
-    console.log(pbAtts)
-    console.log(pbAtts.value[idx].logiFnm)
   }
   reader.readAsDataURL(file)
 }
@@ -695,7 +728,7 @@ const onChangeSign = async() => {
         </table>
       </div>
       <div class="bottom-button">
-        <VButton @click="saveContOne">수 정</VButton>
+        <VButton @click="updateContOne">수 정</VButton>
         <VButton v-if="params.contStatCd == '0000'" @click="onChangeSign">전자 결재(등록)</VButton>
 <!--        todo 전자결재 url 태우기-->
         <VButton @click="routerMove">취 소</VButton>
diff --git a/src/service/contractApi.ts b/src/service/contractApi.ts
index 6e3dda6..50fbaa8 100644
--- a/src/service/contractApi.ts
+++ b/src/service/contractApi.ts
@@ -45,7 +45,6 @@ export async function updateContract(params = {}) {
  * @returns
  */
 export async function saveContract(params = {}) {
-    console.log(params)
     try {
         const result = await axios.post(`/api/cont`,params)
         return result
@@ -87,6 +86,41 @@ export async function getContractDetail(contNo) {
     }
 }
 
+/**
+ * 계약관리 삭제
+ * @param {object} params
+ * @property {string} params.contNo -
+ * @property {string} params.bizNo -
+ * @property {string} params.prcsNo -
+ * @property {string} params.title -
+ * @property {string} params.compNm -
+ * @property {string} params.signDt -
+ * @property {string} params.contSdat -
+ * @property {string} params.contEdat -
+ * @property {string} params.amt -
+ * @property {string} params.excYn -
+ * @property {string} params.reason -
+ * @property {string} params.contAtts{fileOrd,logiFnm,data} -
+ * @returns
+ */
+export async function delContAttachFile(params = {}) {
+    try {
+        const result = await axios.delete(`/api/cont/${params.contNo}/${params.fileOrd}`)
+        return result
+    } catch (e) {
+        const serverError = e.response?.data;
+
+        const message = typeof serverError?.body === 'string'
+            ? serverError.body
+            : 'Unknown error occurred';
+
+        const error = new Error(message); // ✅ 반드시 string만 넣기! 아니면 객체가 문자열로 나옴
+        error.code = serverError?.code;
+        error.errTime = serverError?.errTime;
+        throw error;
+    }
+}
+
 /**
  * 계약관리 조회(페이징)
  * @property {string} params.page - 페이지