diff --git a/apps/cs/src/pages/groups/ui/group-users-section.tsx b/apps/cs/src/pages/groups/ui/group-users-section.tsx
index 7b077a570..dc16fda60 100644
--- a/apps/cs/src/pages/groups/ui/group-users-section.tsx
+++ b/apps/cs/src/pages/groups/ui/group-users-section.tsx
@@ -57,7 +57,6 @@ function GroupUsersSection({ groupId }: GroupUsersSectionProps) {
       getCoreRowModel: getCoreRowModel(),
       onPaginationChange: setPagination,
       onRowSelectionChange: setRowSelection,
-      getRowId: (row) => row.userUnqId,
     },
     dataTableOptions: {
       viewPagination: true,
@@ -65,15 +64,18 @@ function GroupUsersSection({ groupId }: GroupUsersSectionProps) {
   });
 
   const handleDeleteSelected = async () => {
-    const selectedRows = Object.keys(rowSelection);
+    const selectedRows = table.getSelectedRowModel().rows.map((row) => ({
+      groupId: row.original.groupId,
+      userUnqId: row.original.userUnqId,
+    }));
     if (selectedRows.length === 0 || !groupId) return;
     if (!(await confirm("사용자를 삭제하시겠습니까?"))) return;
 
     try {
-      const usersToDelete = selectedRows.map((userUnqId) => ({
+      const usersToDelete = selectedRows.map((row) => ({
         mode: "D",
-        groupId,
-        userUnqId,
+        groupId: row.groupId,
+        userUnqId: row.userUnqId,
       }));
 
       await GroupUsersApi.saveGroupUser(usersToDelete);
@@ -90,6 +92,7 @@ function GroupUsersSection({ groupId }: GroupUsersSectionProps) {
 
   useEffect(() => {
     setPagination({ ...pagination, pageIndex: 0 });
+    setRowSelection({});
   }, [groupId]);
 
   return (