diff --git a/histudy-front/src/components/Post/PostMember.js b/histudy-front/src/components/Post/PostMember.js
index 8f3e924..67b4317 100644
--- a/histudy-front/src/components/Post/PostMember.js
+++ b/histudy-front/src/components/Post/PostMember.js
@@ -30,7 +30,7 @@ export default function PostMember({ control, setValue, getValues }) {
     <FormGroup>
       {teamMember?.map((tm, index) => (
         <FormControlLabel
-          key={tm.sid}
+          key={tm.id}
           control={
             <Controller
               name="participants"
@@ -39,8 +39,8 @@ export default function PostMember({ control, setValue, getValues }) {
               render={({ field }) => (
                 <Checkbox
                   {...field}
-                  value={tm.sid}
-                  checked={field.value.includes(tm.sid)}
+                  value={tm.id}
+                  checked={field.value.includes(tm.id)}
                   onChange={handleCheckboxChange}
                 />
               )}
diff --git a/histudy-front/src/pages/Manager/ManageGroup.js b/histudy-front/src/pages/Manager/ManageGroup.js
index d44730d..2db292c 100644
--- a/histudy-front/src/pages/Manager/ManageGroup.js
+++ b/histudy-front/src/pages/Manager/ManageGroup.js
@@ -40,6 +40,8 @@ const SizedBox = styled(Box)({
 });
 
 export default function ManageGroup() {
+
+ 
   const [groupData, setGroupData] = useState();
   const [ungroupData, setUngroupData] = useState();
   const setGroupAutoCompleteState = useSetRecoilState(groupAutoCompleteState);
diff --git a/histudy-front/src/pages/Post/Post.js b/histudy-front/src/pages/Post/Post.js
index 9b25ab3..828af77 100644
--- a/histudy-front/src/pages/Post/Post.js
+++ b/histudy-front/src/pages/Post/Post.js
@@ -38,7 +38,7 @@ export default function Post({ children }) {
     defaultValues: {
       title: state ? state.title : "",
       content: state ? state.content : "",
-      participants: state ? state.participants.map((p) => p.sid) : [],
+      participants: state ? state.participants.map((p) => p.id) : [],
       totalMinutes: state ? state.totalMinutes : "",
       images: state ? [...state.images.map((image) => image.url)] : [],
       courses: state ? state.courses.map((c) => c.id.toString()) : [],