diff --git a/apps/admin/src/components/StudentProfileContent/ExamScoresTab.tsx b/apps/admin/src/components/StudentProfileContent/ExamScoresTab.tsx
index 527b5002..3c9e74eb 100644
--- a/apps/admin/src/components/StudentProfileContent/ExamScoresTab.tsx
+++ b/apps/admin/src/components/StudentProfileContent/ExamScoresTab.tsx
@@ -125,7 +125,7 @@ export const ExamScoresTab: React.FC<
       title: '成绩',
       dataIndex: 'score',
       render: (v: number | null, r) => (
-        <EditableArchiveCell value={v ?? undefined} field={EXAM_SCORE_FIELDS.score} record={r} editor="number"           min={0} onSave={saveCell}>
+        <EditableArchiveCell value={v ?? undefined} field={EXAM_SCORE_FIELDS.score} record={r} editor="number"           min={0} max={999.99} onSave={saveCell}>
           {v ?? '-'}
         </EditableArchiveCell>
           ),
@@ -134,7 +134,7 @@ export const ExamScoresTab: React.FC<
       title: '班级均分',
       dataIndex: 'classAvg',
       render: (v: number | undefined, r) => (
-        <EditableArchiveCell value={v} field={EXAM_SCORE_FIELDS.classAvg} record={r} editor="number"           min={0} onSave={saveCell}>
+        <EditableArchiveCell value={v} field={EXAM_SCORE_FIELDS.classAvg} record={r} editor="number"           min={0} max={999.99} onSave={saveCell}>
           {v !== undefined ? v : '-'}
         </EditableArchiveCell>
           ),
@@ -143,7 +143,7 @@ export const ExamScoresTab: React.FC<
       title: '排名',
       dataIndex: 'rank',
       render: (v: number | undefined, r) => (
-        <EditableArchiveCell value={v} field={EXAM_SCORE_FIELDS.rank} record={r} editor="number"           min={1} onSave={saveCell}>
+        <EditableArchiveCell value={v} field={EXAM_SCORE_FIELDS.rank} record={r} editor="number"           min={1} max={2147483647} onSave={saveCell}>
           {v !== undefined ? v : '-'}
         </EditableArchiveCell>
           ),
@@ -247,13 +247,13 @@ export const ExamScoresTab: React.FC<
             <AutoComplete options={SUBJECT_OPTIONS} placeholder="输入或选择科目" />
           </Form.Item>
           <Form.Item name="score" label="成绩" rules={[{ required: true, message: '请输入成绩' }]}>
-            <InputNumber min={0} style={{ width: '100%' }} />
+            <InputNumber min={0} max={999.99} style={{ width: '100%' }} />
           </Form.Item>
           <Form.Item name="classAvg" label="班级均分">
-            <InputNumber min={0} style={{ width: '100%' }} />
+            <InputNumber min={0} max={999.99} style={{ width: '100%' }} />
           </Form.Item>
           <Form.Item name="rank" label="排名">
-            <InputNumber min={1} style={{ width: '100%' }} />
+            <InputNumber min={1} max={2147483647} style={{ width: '100%' }} />
           </Form.Item>
           <Form.Item name="examDate" label="考试日期">
             <DatePicker style={{ width: '100%' }} />
diff --git a/apps/server/src/archive/dto/archive.dto.ts b/apps/server/src/archive/dto/archive.dto.ts
index 1cf84659..89b5341c 100644
--- a/apps/server/src/archive/dto/archive.dto.ts
+++ b/apps/server/src/archive/dto/archive.dto.ts
@@ -6,6 +6,7 @@ import {
   IsDateString,
   IsNotEmpty,
   Min,
+  Max,
   IsInt,
 } from 'class-validator';
 
@@ -38,9 +39,10 @@ export class CreateExamScoreDto {
   @IsString() @IsNotEmpty() examType: string;
   @IsOptional() @IsString() examName?: string;
   @IsString() @IsNotEmpty() subject: string;
-  @IsNumber() @Min(0) score: number;
-  @IsOptional() @IsNumber() @Min(0) classAvg?: number;
-  @IsOptional() @IsNumber() @Min(1) rank?: number;
+  // 列类型 decimal(5,2)/int：上限与列宽对齐，避免超范围写入 MySQL 报 500
+  @IsNumber() @Min(0) @Max(999.99) score: number;
+  @IsOptional() @IsNumber() @Min(0) @Max(999.99) classAvg?: number;
+  @IsOptional() @IsNumber() @Min(1) @Max(2147483647) rank?: number;
   @IsOptional() @IsDateString() examDate?: string;
   @IsOptional() @IsNumber() enrollmentId?: number;
 }