diff --git a/src/app/api/image/cad/route.js b/src/app/api/image/cad/route.js
index b7d64a50..a0e60a4c 100644
--- a/src/app/api/image/cad/route.js
+++ b/src/app/api/image/cad/route.js
@@ -11,9 +11,10 @@ const s3 = new S3Client({
 })
 
 const uploadImage = async (file) => {
+  console.log('🚀 ~ uploadImage ~ file:', file)
   const Body = Buffer.from(await file.arrayBuffer())
   const Key = `cads/${file.name}`
-  const ContentType = file.ContentType
+  const ContentType = 'image/png'
 
   await s3.send(
     new PutObjectCommand({
diff --git a/src/hooks/common/useRefFiles.js b/src/hooks/common/useRefFiles.js
index a74a7f8a..90c96f30 100644
--- a/src/hooks/common/useRefFiles.js
+++ b/src/hooks/common/useRefFiles.js
@@ -8,7 +8,6 @@ import { useCanvas } from '@/hooks/useCanvas'
 import { deleteBackGroundImage, setBackGroundImage } from '@/lib/imageActions'
 import { settingModalFirstOptionsState } from '@/store/settingAtom'
 import { popSpinnerState } from '@/store/popupAtom'
-import Config from '@/config/config.export'
 
 /**
  * 배경 이미지 관리
@@ -239,14 +238,40 @@ export function useRefFiles() {
     const res = await post({ url: converterUrl, data: formData })
     console.log('🚀 ~ handleUploadConvertRefFile ~ res:', res)
 
+    // Convert Base64 to Blob
+    const base64Data = res.Files[0].FileData
+    const byteCharacters = atob(base64Data)
+    const byteArrays = []
+
+    for (let offset = 0; offset < byteCharacters.length; offset += 512) {
+      const slice = byteCharacters.slice(offset, offset + 512)
+      const byteNumbers = new Array(slice.length)
+
+      for (let i = 0; i < slice.length; i++) {
+        byteNumbers[i] = slice.charCodeAt(i)
+      }
+
+      const byteArray = new Uint8Array(byteNumbers)
+      byteArrays.push(byteArray)
+    }
+
+    const blob = new Blob(byteArrays, { type: 'image/png' })
+
+    // Create File object from Blob
+    const convertImg = new File([blob], res.Files[0].FileName, { type: 'image/png' })
+
+    const newFormData = new FormData()
+    newFormData.append('file', convertImg)
+
     /** 캐드 도면 파일 업로드 */
     const result = await post({
       url: `${Config().baseUrl}/api/image/cad`,
-      data: res,
+      data: newFormData,
     })
     console.log('🚀 ~ handleUploadConvertRefFile ~ result:', result)
 
-    setCurrentBgImage(`${process.env.NEXT_PUBLIC_AWS_S3_BASE_URL}/${res.fileName}`)
+    // setCurrentBgImage(`${process.env.NEXT_PUBLIC_AWS_S3_BASE_URL}/${result.fileName}`)
+    setCurrentBgImage(result.filePath)
     setRefImage(file)
 
     const params = {