diff --git a/backend-node/src/controllers/adminController.ts b/backend-node/src/controllers/adminController.ts
index 667637c8..0ec055ba 100644
--- a/backend-node/src/controllers/adminController.ts
+++ b/backend-node/src/controllers/adminController.ts
@@ -1739,6 +1739,7 @@ export const getUserInfo = async (req: AuthenticatedRequest, res: Response) => {
           u.fax_no,
           u.partner_objid,
           u.rank,
+          u.photo,
           u.locale,
           u.company_code,
           u.data_type,
@@ -1791,6 +1792,9 @@ export const getUserInfo = async (req: AuthenticatedRequest, res: Response) => {
         faxNo: user.fax_no,
         partnerObjid: user.partner_objid,
         rank: user.rank,
+        photo: user.photo
+          ? `data:image/jpeg;base64,${user.photo.toString("base64")}`
+          : null,
         locale: user.locale,
         companyCode: user.company_code,
         dataType: user.data_type,
@@ -2724,7 +2728,24 @@ export const updateProfile = async (
     if (email !== undefined) updateData.email = email;
     if (tel !== undefined) updateData.tel = tel;
     if (cellPhone !== undefined) updateData.cell_phone = cellPhone;
-    if (photo !== undefined) updateData.photo = photo;
+
+    // photo 데이터 처리 (Base64를 Buffer로 변환하여 저장)
+    if (photo !== undefined) {
+      if (photo && typeof photo === "string") {
+        try {
+          // Base64 헤더 제거 (data:image/jpeg;base64, 등)
+          const base64Data = photo.replace(/^data:image\/[a-z]+;base64,/, "");
+          // Base64를 Buffer로 변환
+          updateData.photo = Buffer.from(base64Data, "base64");
+        } catch (error) {
+          console.error("Base64 이미지 처리 오류:", error);
+          updateData.photo = null;
+        }
+      } else {
+        updateData.photo = null; // 빈 값이면 null로 설정
+      }
+    }
+
     if (locale !== undefined) updateData.locale = locale;
 
     // 업데이트할 데이터가 없으면 에러
@@ -2767,10 +2788,18 @@ export const updateProfile = async (
       },
     });
 
+    // photo가 Buffer 타입인 경우 Base64로 변환
+    const responseData = {
+      ...updatedUser,
+      photo: updatedUser?.photo
+        ? `data:image/jpeg;base64,${updatedUser.photo.toString("base64")}`
+        : null,
+    };
+
     res.json({
       result: true,
       message: "프로필이 성공적으로 업데이트되었습니다.",
-      data: updatedUser,
+      data: responseData,
     });
   } catch (error) {
     console.error("프로필 업데이트 오류:", error);
diff --git a/backend-node/src/controllers/authController.ts b/backend-node/src/controllers/authController.ts
index c9e5b6ce..43a82f2e 100644
--- a/backend-node/src/controllers/authController.ts
+++ b/backend-node/src/controllers/authController.ts
@@ -166,15 +166,33 @@ export class AuthController {
 
       const userInfo = JwtUtils.verifyToken(token);
 
+      // DB에서 최신 사용자 정보 조회 (locale 포함)
+      const dbUserInfo = await AuthService.getUserInfo(userInfo.userId);
+
+      if (!dbUserInfo) {
+        res.status(401).json({
+          success: false,
+          message: "사용자 정보를 찾을 수 없습니다.",
+          error: {
+            code: "USER_NOT_FOUND",
+            details: "사용자 정보가 삭제되었거나 존재하지 않습니다.",
+          },
+        });
+        return;
+      }
+
       const userInfoResponse: UserInfo = {
-        userId: userInfo.userId,
-        userName: userInfo.userName || "",
-        deptName: userInfo.deptName || "",
-        companyCode: userInfo.companyCode || "ILSHIN",
-        userType: userInfo.userType || "USER",
-        userTypeName: userInfo.userTypeName || "일반사용자",
+        userId: dbUserInfo.userId,
+        userName: dbUserInfo.userName || "",
+        deptName: dbUserInfo.deptName || "",
+        companyCode: dbUserInfo.companyCode || "ILSHIN",
+        userType: dbUserInfo.userType || "USER",
+        userTypeName: dbUserInfo.userTypeName || "일반사용자",
+        email: dbUserInfo.email || "",
+        photo: dbUserInfo.photo,
+        locale: dbUserInfo.locale || "KR", // locale 정보 추가
         isAdmin:
-          userInfo.userType === "ADMIN" || userInfo.userId === "plm_admin",
+          dbUserInfo.userType === "ADMIN" || dbUserInfo.userId === "plm_admin",
       };
 
       res.status(200).json({
diff --git a/backend-node/src/services/authService.ts b/backend-node/src/services/authService.ts
index 5aafc132..a7e32d5c 100644
--- a/backend-node/src/services/authService.ts
+++ b/backend-node/src/services/authService.ts
@@ -146,6 +146,8 @@ export class AuthService {
           user_type_name: true,
           partner_objid: true,
           company_code: true,
+          locale: true,
+          photo: true,
         },
       });
 
@@ -189,6 +191,8 @@ export class AuthService {
         partnerObjid: userInfo.partner_objid || undefined,
         authName: authInfo.length > 0 ? authInfo[0].auth_name : undefined,
         companyCode: userInfo.company_code || "ILSHIN",
+        photo: userInfo.photo ? `data:image/jpeg;base64,${userInfo.photo.toString('base64')}` : undefined,
+        locale: userInfo.locale || "KR",
       };
 
       logger.info(`사용자 정보 조회 완료: ${userId}`);
diff --git a/backend-node/src/types/auth.ts b/backend-node/src/types/auth.ts
index 785157f9..c1384b51 100644
--- a/backend-node/src/types/auth.ts
+++ b/backend-node/src/types/auth.ts
@@ -15,6 +15,9 @@ export interface UserInfo {
   companyCode: string;
   userType?: string;
   userTypeName?: string;
+  email?: string;
+  photo?: string;
+  locale?: string;
   isAdmin?: boolean;
 }
 
@@ -47,6 +50,8 @@ export interface PersonBean {
   partnerObjid?: string;
   authName?: string;
   companyCode?: string;
+  photo?: string;
+  locale?: string;
 }
 
 // 로그인 결과 타입 (기존 LoginService.loginPwdCheck 반환값)
diff --git a/frontend/components/layout/AppLayout.tsx b/frontend/components/layout/AppLayout.tsx
index 35597eb3..9a4d6207 100644
--- a/frontend/components/layout/AppLayout.tsx
+++ b/frontend/components/layout/AppLayout.tsx
@@ -204,6 +204,7 @@ export function AppLayout({ children }: AppLayoutProps) {
     formData,
     selectedImage,
     isSaving,
+    departments,
     alertModal,
     closeAlert,
     openProfileModal,
@@ -394,6 +395,7 @@ export function AppLayout({ children }: AppLayoutProps) {
         formData={formData}
         selectedImage={selectedImage}
         isSaving={isSaving}
+        departments={departments}
         alertModal={alertModal}
         onClose={closeProfileModal}
         onFormChange={updateFormData}
diff --git a/frontend/components/layout/ProfileModal.tsx b/frontend/components/layout/ProfileModal.tsx
index a99fd23d..d2467bac 100644
--- a/frontend/components/layout/ProfileModal.tsx
+++ b/frontend/components/layout/ProfileModal.tsx
@@ -53,6 +53,10 @@ interface ProfileModalProps {
   formData: ProfileFormData;
   selectedImage: string;
   isSaving: boolean;
+  departments: Array<{
+    deptCode: string;
+    deptName: string;
+  }>;
   alertModal: {
     isOpen: boolean;
     title: string;
@@ -76,6 +80,7 @@ export function ProfileModal({
   formData,
   selectedImage,
   isSaving,
+  departments,
   alertModal,
   onClose,
   onFormChange,
@@ -99,12 +104,14 @@ export function ProfileModal({
                 <Avatar className="h-24 w-24">
                   {selectedImage ? (
                     <AvatarImage src={selectedImage} alt="프로필 사진 미리보기" />
+                  ) : user?.photo ? (
+                    <AvatarImage src={user.photo} alt="기존 프로필 사진" />
                   ) : (
                     <AvatarFallback className="text-lg">{formData.userName?.substring(0, 1) || "U"}</AvatarFallback>
                   )}
                 </Avatar>
 
-                {selectedImage && (
+                {(selectedImage || user?.photo) && (
                   <Button
                     type="button"
                     variant="destructive"
@@ -171,12 +178,24 @@ export function ProfileModal({
               <div className="grid grid-cols-2 gap-4">
                 <div className="space-y-2">
                   <Label htmlFor="deptName">부서</Label>
-                  <Input
-                    id="deptName"
-                    value={formData.deptName}
-                    onChange={(e) => onFormChange("deptName", e.target.value)}
-                    placeholder="부서를 입력하세요"
-                  />
+                  <Select value={formData.deptName} onValueChange={(value) => onFormChange("deptName", value)}>
+                    <SelectTrigger>
+                      <SelectValue placeholder="부서 선택" />
+                    </SelectTrigger>
+                    <SelectContent>
+                      {Array.isArray(departments) && departments.length > 0 ? (
+                        departments.map((department) => (
+                          <SelectItem key={department.deptCode} value={department.deptName}>
+                            {department.deptName}
+                          </SelectItem>
+                        ))
+                      ) : (
+                        <SelectItem value="no-data" disabled>
+                          부서 정보가 없습니다
+                        </SelectItem>
+                      )}
+                    </SelectContent>
+                  </Select>
                 </div>
                 <div className="space-y-2">
                   <Label htmlFor="positionName">직급</Label>
diff --git a/frontend/hooks/useAuth.ts b/frontend/hooks/useAuth.ts
index 200ad11b..921cf21b 100644
--- a/frontend/hooks/useAuth.ts
+++ b/frontend/hooks/useAuth.ts
@@ -19,6 +19,7 @@ interface UserInfo {
   userTypeName?: string;
   authName?: string;
   partnerCd?: string;
+  locale?: string;
   isAdmin: boolean;
   sabun?: string;
   photo?: string | null;
diff --git a/frontend/hooks/useProfile.ts b/frontend/hooks/useProfile.ts
index adfe8d26..d723b895 100644
--- a/frontend/hooks/useProfile.ts
+++ b/frontend/hooks/useProfile.ts
@@ -1,6 +1,6 @@
 "use client";
 
-import { useState, useCallback } from "react";
+import { useState, useCallback, useEffect } from "react";
 import { ProfileFormData, ProfileModalState } from "@/types/profile";
 import { LAYOUT_CONFIG, MESSAGES } from "@/constants/layout";
 import { apiCall } from "@/lib/api/client";
@@ -40,6 +40,14 @@ export const useProfile = (user: any, refreshUserData: () => Promise<void>) => {
     type: "info",
   });
 
+  // 부서 목록 상태
+  const [departments, setDepartments] = useState<
+    Array<{
+      deptCode: string;
+      deptName: string;
+    }>
+  >([]);
+
   // 알림 모달 표시 함수
   const showAlert = useCallback((title: string, message: string, type: "success" | "error" | "info" = "info") => {
     setAlertModal({
@@ -55,11 +63,33 @@ export const useProfile = (user: any, refreshUserData: () => Promise<void>) => {
     setAlertModal((prev) => ({ ...prev, isOpen: false }));
   }, []);
 
+  // 부서 목록 로드 함수
+  const loadDepartments = useCallback(async () => {
+    try {
+      const response = await apiCall("GET", "/admin/departments");
+      if (response.success && response.data) {
+        setDepartments(response.data);
+      }
+    } catch (error) {
+      console.error("부서 목록 로드 실패:", error);
+    }
+  }, []);
+
   /**
    * 프로필 모달 열기
    */
   const openProfileModal = useCallback(() => {
     if (user) {
+      console.log("🔍 프로필 모달 열기 - 사용자 정보:", {
+        userName: user.userName,
+        email: user.email,
+        deptName: user.deptName,
+        locale: user.locale,
+      });
+
+      // 부서 목록 로드
+      loadDepartments();
+
       setModalState((prev) => ({
         ...prev,
         isOpen: true,
@@ -68,14 +98,14 @@ export const useProfile = (user: any, refreshUserData: () => Promise<void>) => {
           email: user.email || "",
           deptName: user.deptName || "",
           positionName: user.positionName || "",
-          locale: user.locale || "",
+          locale: user.locale || "KR", // 기본값을 KR로 설정
         },
         selectedImage: user.photo || "",
         selectedFile: null,
         isSaving: false,
       }));
     }
-  }, [user]);
+  }, [user, loadDepartments]);
 
   /**
    * 프로필 모달 닫기
@@ -235,6 +265,7 @@ export const useProfile = (user: any, refreshUserData: () => Promise<void>) => {
     formData: modalState.formData,
     selectedImage: modalState.selectedImage,
     isSaving: modalState.isSaving,
+    departments,
 
     // 알림 모달 상태
     alertModal,