diff --git a/src/components/main/MainEventCalendar.vue b/src/components/main/MainEventCalendar.vue
index 021a9af..d0c26e7 100644
--- a/src/components/main/MainEventCalendar.vue
+++ b/src/components/main/MainEventCalendar.vue
@@ -593,6 +593,17 @@
         },
     );
 
+    // selectbox 프로젝트 선택 변경 사항 감지
+    watch(
+        () => projectStore.selectedProject,
+        newProject => {
+            if (newProject) {
+                selectedProject.value = newProject.PROJCTSEQ;
+                checkedInProject.value = newProject;
+            }
+        }
+    );
+
     onMounted(async () => {
         await userStore.userInfo();
         user.value = userStore.user;