diff --git a/backend/src/modules/activity/entities/activity.entity.ts b/backend/src/modules/activity/entities/activity.entity.ts
index 2a32fab..79653c3 100644
--- a/backend/src/modules/activity/entities/activity.entity.ts
+++ b/backend/src/modules/activity/entities/activity.entity.ts
@@ -28,6 +28,7 @@ export type ActivityType =
   | 'task.assignees_changed'
   | 'task.due_changed'
   | 'task.edited'
+  | 'task.checkpoint_reported'
   | 'task.file_removed'
   | 'task.removed';
 
diff --git a/backend/src/modules/task/task.service.ts b/backend/src/modules/task/task.service.ts
index 0d25a19..3f76c3f 100644
--- a/backend/src/modules/task/task.service.ts
+++ b/backend/src/modules/task/task.service.ts
@@ -1420,6 +1420,15 @@ export class TaskService {
       }),
     );
 
+    // 활동 적재 — 중간 점검 보고
+    await this.activity.record({
+      projectId: project.id,
+      actorId: actingUserId,
+      type: 'task.checkpoint_reported',
+      payload: { taskTitle: task.title },
+      taskSeq: task.seq,
+    });
+
     // 지시자에게 알림(행위자=작업자는 자동 제외)
     await this.notification.notify({
       recipientIds: task.issuer ? [task.issuer.id] : [],
diff --git a/frontend/src/stores/activity.store.ts b/frontend/src/stores/activity.store.ts
index fb1e8a3..6b0cf44 100644
--- a/frontend/src/stores/activity.store.ts
+++ b/frontend/src/stores/activity.store.ts
@@ -100,6 +100,8 @@ function toProjectActivityItem(api: ApiActivity): ProjectActivityItem {
     }
     case 'task.edited':
       return { ...base, tone: 'task', icon: 'pencil', html: `<b>${actor}</b>님이 <span class="tgt">${title}</span> 업무를 수정했습니다` }
+    case 'task.checkpoint_reported':
+      return { ...base, tone: 'task', icon: 'check', html: `<b>${actor}</b>님이 <span class="tgt">${title}</span> 업무의 중간 점검을 보고했습니다` }
     case 'task.file_removed':
       return {
         ...base,
diff --git a/frontend/src/stores/task.store.ts b/frontend/src/stores/task.store.ts
index 7545534..e1dd542 100644
--- a/frontend/src/stores/task.store.ts
+++ b/frontend/src/stores/task.store.ts
@@ -159,6 +159,8 @@ function toTaskActivityView(api: ApiActivity): ActivityView {
     }
     case 'task.edited':
       return { tone: '', icon: 'check', html: `<b>${actor}</b>님이 업무를 수정했습니다`, time }
+    case 'task.checkpoint_reported':
+      return { tone: 'blue', icon: 'check', html: `<b>${actor}</b>님이 중간 점검 상태를 보고했습니다`, time }
     case 'task.file_removed':
       return { tone: '', icon: 'paperclip', html: `<b>${actor}</b>님이 첨부 파일을 삭제했습니다`, time, file: pstr(p, 'fileName') }
     default:
diff --git a/frontend/src/types/activity.ts b/frontend/src/types/activity.ts
index d86aeb2..0a92829 100644
--- a/frontend/src/types/activity.ts
+++ b/frontend/src/types/activity.ts
@@ -16,6 +16,7 @@ export type ApiActivityType =
   | 'task.assignees_changed'
   | 'task.due_changed'
   | 'task.edited'
+  | 'task.checkpoint_reported'
   | 'task.file_removed'
   | 'task.removed'