diff --git a/playground/src/views/question-bank/task-mgr/components/ResponseStatus.vue b/playground/src/views/question-bank/task-mgr/components/ResponseStatus.vue
index 8837457..9a42ae4 100644
--- a/playground/src/views/question-bank/task-mgr/components/ResponseStatus.vue
+++ b/playground/src/views/question-bank/task-mgr/components/ResponseStatus.vue
@@ -43,6 +43,7 @@ const rows = computed(() => {
       titleId: item?.titleId ?? '',
       correctNum: correct,
       errorNum: error,
+      correctRate: Number.isFinite(rate) ? rate : 0,
       correctRateText: `${(rate * 100).toFixed(0)}%`,
       unSubmitNum: unSubmit,
     }
@@ -139,6 +140,10 @@ watch(
 function getTitleKey(item: any) {
   return item.xkwTitle?.titleId ?? item.titleId ?? item.xkwTitle?.id ?? item.id
 }
+
+function sortByCorrectRate(a: any, b: any) {
+  return Number(a?.correctRate ?? 0) - Number(b?.correctRate ?? 0)
+}
 </script>
 
 <template>
@@ -198,6 +203,7 @@ function getTitleKey(item: any) {
         label="得分率"
         class-name="pointer-cell"
         sortable
+        :sort-method="sortByCorrectRate"
         header-align="center"
         align="center"
       >
diff --git a/playground/src/views/question-bank/task-mgr/components/Student.vue b/playground/src/views/question-bank/task-mgr/components/Student.vue
index ae01acb..1330c95 100644
--- a/playground/src/views/question-bank/task-mgr/components/Student.vue
+++ b/playground/src/views/question-bank/task-mgr/components/Student.vue
@@ -54,8 +54,18 @@ type StudentPerformanceLevel =
   | 'fail'
   | 'default'
 
+function hasAnyAnswer(item: any): boolean {
+  const answer = item?.submitAnswer
+  const hasText =
+    typeof answer === 'string' ? Boolean(answer.trim()) : Boolean(answer)
+  const pics = item?.submitAnswerPic
+  const hasPics = typeof pics === 'string' ? Boolean(pics.trim()) : Boolean(pics)
+  return hasText || hasPics
+}
+
 function resolvePerformanceLevel(item: any): StudentPerformanceLevel {
-  if (item.status === 0) return 'unsubmitted'
+  // 约定：学生只要上传了作答图片，也视为已作答（不算未提交）
+  if (item.status === 0 && !hasAnyAnswer(item)) return 'unsubmitted'
   if (item.gradingStatus === 0) return 'ungraded'
 
   const level = Number(item?.level ?? item?.scoreLevel ?? 0)
@@ -72,6 +82,14 @@ function resolvePerformanceLevel(item: any): StudentPerformanceLevel {
   return 'default'
 }
 
+function getSubmitAnswerText(item: any): string {
+  const answer = item?.submitAnswer
+  if (typeof answer === 'string' && answer.trim()) return answer
+  if (answer != null && String(answer).trim()) return String(answer)
+  if (item?.submitAnswerPic) return '（已上传图片作答）'
+  return '未作答'
+}
+
 function getGradingStatusText(item: any) {
   const performanceLevel = resolvePerformanceLevel(item)
   if (performanceLevel === 'unsubmitted') return '未提交'
@@ -578,7 +596,7 @@ async function submitCorrection() {
           <template v-if="!isSubjectiveItem(item)">
             <div class="student-answer">
               <span class="label">学生答案：</span>
-              <span class="content">{{ item.submitAnswer || '-' }}</span>
+              <span class="content">{{ getSubmitAnswerText(item) }}</span>
             </div>
             <div class="system-mark">
               <span class="label">系统批改结果：</span>
@@ -611,7 +629,7 @@ async function submitCorrection() {
                 class="answer-body"
                 v-html="
                   highlightKeywords(
-                    formatParagraphs(item.submitAnswer || '未作答'),
+                    formatParagraphs(getSubmitAnswerText(item)),
                     getAiKeywords(item),
                   )
                 "