diff --git a/src/apis/supabase/postAddFavorite.ts b/src/apis/supabase/postAddFavorite.ts
new file mode 100644
index 0000000..559c0b0
--- /dev/null
+++ b/src/apis/supabase/postAddFavorite.ts
@@ -0,0 +1,39 @@
+import { useLocation } from 'react-router-dom';
+
+import { unitripSupabase } from '@/utils/supabaseClient';
+
+const toggleFavorite = async () => {
+  const kakaoId = sessionStorage.getItem('kakao_id');
+
+  const location = useLocation();
+  const queryParams = new URLSearchParams(location.search);
+  const place = queryParams.get('contentId');
+
+  const { data, error: fetchError } = await unitripSupabase
+    .from('USER')
+    .select('favorite_list')
+    .eq('kakao_id', kakaoId);
+
+  if (fetchError) {
+    throw new Error('사용자 정보를 가져오는 데 문제가 발생했습니다');
+  }
+
+  const currentFavorites = data[0].favorite_list || [];
+  //기존 배열에 해당 장소가 존재하면 제거, 존재하지 않으면 추가
+  const updatedFavorites = currentFavorites.includes(place)
+    ? currentFavorites.filter((favorite: number) => favorite !== Number(place))
+    : [...currentFavorites, Number(place)];
+
+  const { error } = await unitripSupabase
+    .from('USER')
+    .update({
+      favorite_list: updatedFavorites,
+    })
+    .eq('kakao_id', kakaoId);
+
+  if (error) {
+    throw new Error('서버에 문제가 있습니다');
+  }
+};
+
+export default toggleFavorite;