diff --git a/lib/modules/scoring/views/scoring_page.dart b/lib/modules/scoring/views/scoring_page.dart
index 440840a..c8d40ba 100644
--- a/lib/modules/scoring/views/scoring_page.dart
+++ b/lib/modules/scoring/views/scoring_page.dart
@@ -1295,6 +1295,8 @@ class _PerformancePanel extends StatelessWidget {
                           final value = await showScorePicker(
                             current: entry.value,
                             maximum: itemMaximum,
+                            // 规定赛创意与完成质量评分允许为 0，需支持清零后正常提交。
+                            includeZero: true,
                           );
                           if (value != null) {
                             controller.setPerformance(entry.key, value);
diff --git a/lib/modules/scoring/widgets/scoring_dialogs.dart b/lib/modules/scoring/widgets/scoring_dialogs.dart
index be6e028..4c6e059 100644
--- a/lib/modules/scoring/widgets/scoring_dialogs.dart
+++ b/lib/modules/scoring/widgets/scoring_dialogs.dart
@@ -21,9 +21,12 @@ class SubmissionScoreDetail {
 Future<double?> showScorePicker({
   required double current,
   required int maximum,
+  bool includeZero = false,
 }) {
-  var selected = current.round().clamp(1, maximum);
-  final rowCount = (maximum / 5).ceil();
+  final minimum = includeZero ? 0 : 1;
+  var selected = current.round().clamp(minimum, maximum);
+  final itemCount = maximum - minimum + 1;
+  final rowCount = (itemCount / 5).ceil();
   final dialogHeight = (285 + rowCount * 58).clamp(420, 650).toDouble();
   return Get.dialog<double>(
     StatefulBuilder(
@@ -101,9 +104,9 @@ Future<double?> showScorePicker({
                                         crossAxisSpacing: 20,
                                         mainAxisExtent: itemExtent,
                                       ),
-                                  itemCount: maximum,
+                                  itemCount: itemCount,
                                   itemBuilder: (context, index) {
-                                    final value = index + 1;
+                                    final value = index + minimum;
                                     final active = value == selected;
                                     return InkWell(
                                       onTap: () =>
diff --git a/test/api_models_test.dart b/test/api_models_test.dart
index 783e2c8..9ef3ce2 100644
--- a/test/api_models_test.dart
+++ b/test/api_models_test.dart
@@ -142,9 +142,14 @@ void main() {
       itemCode: 'CQ_ACCURACY',
       inputValue: 18.5,
     );
+    const zeroScore = JudgeScoreItemInput(
+      itemCode: 'CQ_ACCURACY',
+      inputValue: 0,
+    );
     const count = JudgeScoreItemInput(itemCode: 'T_FAILURE', countValue: 2);
 
     expect(score.toJson(), {'itemCode': 'CQ_ACCURACY', 'inputValue': 18.5});
+    expect(zeroScore.toJson(), {'itemCode': 'CQ_ACCURACY', 'inputValue': 0.0});
     expect(count.toJson(), {'itemCode': 'T_FAILURE', 'countValue': 2.0});
     expect(score.toJson(), isNot(contains('totalScore')));
   });
diff --git a/test/scoring_dialogs_test.dart b/test/scoring_dialogs_test.dart
new file mode 100644
index 0000000..bca2048
--- /dev/null
+++ b/test/scoring_dialogs_test.dart
@@ -0,0 +1,21 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:get/get.dart';
+import 'package:yd_pattern_scoring_system/modules/scoring/widgets/scoring_dialogs.dart';
+
+void main() {
+  testWidgets('规定赛评分选择器可以选择并返回 0 分', (tester) async {
+    Get.testMode = true;
+    await tester.pumpWidget(const GetMaterialApp(home: Scaffold()));
+
+    final result = showScorePicker(current: 0, maximum: 20, includeZero: true);
+    await tester.pumpAndSettle();
+
+    expect(find.text('0'), findsOneWidget);
+    await tester.tap(find.text('0'));
+    await tester.tap(find.text('确定'));
+    await tester.pumpAndSettle();
+
+    expect(await result, 0);
+  });
+}