diff --git a/src/modules/mileage/StatisticsView.tsx b/src/modules/mileage/StatisticsView.tsx
index 38d7fc1..4d6f98f 100644
--- a/src/modules/mileage/StatisticsView.tsx
+++ b/src/modules/mileage/StatisticsView.tsx
@@ -354,7 +354,9 @@ export default function StatisticsView() {
                           <>
                             <div className="space-y-0.5">
                               <p className="text-[8px] font-bold text-slate-400 uppercase tracking-wider">{assessment.label}区间</p>
-                              <p className="text-[10px] font-black text-slate-700">{assessment.startDate} ~ {assessment.endDate}</p>
+                              {(assessment.periods.length > 0 ? assessment.periods : [`${assessment.startDate} ~ ${assessment.endDate}`]).map((period, i) => (
+                                <p key={i} className="text-[10px] font-black text-slate-700">{period}</p>
+                              ))}
                             </div>
                             <div className="space-y-0.5">
                               <p className="text-[8px] font-bold text-slate-400 uppercase tracking-wider">{assessment.label}任务/辆</p>
diff --git a/src/modules/mileage/types.ts b/src/modules/mileage/types.ts
index 435e5ac..e7371ca 100644
--- a/src/modules/mileage/types.ts
+++ b/src/modules/mileage/types.ts
@@ -93,6 +93,7 @@ export interface TargetYearlyAssessment {
   dailyTarget: number;
   startDate: string | null;
   endDate: string | null;
+  periods: string[];
 }
 
 export interface TargetVehicle {
diff --git a/src/server/routes/mileage/targets.ts b/src/server/routes/mileage/targets.ts
index f848c89..4f1dbb3 100644
--- a/src/server/routes/mileage/targets.ts
+++ b/src/server/routes/mileage/targets.ts
@@ -84,6 +84,31 @@ app.get('/', async (c) => {
       yearlyMap.set(row.target_id, list);
     }
 
+    const [yearlyPeriodRows] = await pool.execute(`
+      SELECT
+        v.target_id,
+        y.year_number,
+        DATE_FORMAT(DATE_ADD(v.assessment_start_date, INTERVAL y.year_number - 1 YEAR), '%Y-%m-%d') as start_date,
+        DATE_FORMAT(DATE_SUB(DATE_ADD(v.assessment_start_date, INTERVAL y.year_number YEAR), INTERVAL 1 DAY), '%Y-%m-%d') as end_date,
+        COUNT(*) as cnt
+      FROM tab_mileage_assessment_vehicle v
+      JOIN tab_mileage_assessment_target t ON t.id = v.target_id AND t.is_deleted = 0
+      JOIN (
+        SELECT 1 as year_number UNION ALL SELECT 2 UNION ALL SELECT 3 UNION ALL SELECT 4 UNION ALL SELECT 5
+      ) y ON y.year_number <= LEAST(t.assessment_years, v.current_year_number)
+      WHERE v.is_deleted = 0
+      GROUP BY v.target_id, y.year_number, v.assessment_start_date
+      ORDER BY v.target_id, y.year_number, v.assessment_start_date
+    `) as [any[], unknown];
+
+    const yearlyPeriodsMap = new Map<string, string[]>();
+    for (const row of yearlyPeriodRows) {
+      const key = `${row.target_id}-${row.year_number}`;
+      const list = yearlyPeriodsMap.get(key) || [];
+      list.push(`${row.start_date} ~ ${row.end_date} (${row.cnt}台)`);
+      yearlyPeriodsMap.set(key, list);
+    }
+
     const [periodRows] = await pool.execute(`
       SELECT target_id,
              DATE_FORMAT(assessment_start_date, '%Y-%m-%d') as start_date,
@@ -158,6 +183,7 @@ app.get('/', async (c) => {
           dailyTarget: assessmentDaysLeft > 0 ? Math.round((remainingMileage / assessmentDaysLeft) * 10) / 10 : 0,
           startDate: row.start_date || null,
           endDate: row.end_date || null,
+          periods: yearlyPeriodsMap.get(`${row.target_id}-${row.year_number}`) || [],
         };
       });