diff --git a/src/components/Study.vue b/src/components/Study.vue
index 9d6ce3d..01f72da 100644
--- a/src/components/Study.vue
+++ b/src/components/Study.vue
@@ -44,6 +44,9 @@ const pageSize = 20;
 const taskApplications = ref<TaskApplication[]>([]);
 const applicationsLoading = ref(false);
 const appUrlTitles = ref<Record<number, string>>({});
+const updatingApplicationId = ref<number | null>(null);
+const removingTask = ref(false);
+const weightsLoading = ref(false);
 
 const selectedTask = computed(() =>
   tasks.value.find((item) => item.taskId === selectedTaskId.value) || null
@@ -104,6 +107,8 @@ async function loadTaskApplications(taskNum: string) {
 }
 
 const changeApplicationStatus = async (item: TaskApplication) => {
+  if (updatingApplicationId.value !== null) return;
+  updatingApplicationId.value = item.id;
   try {
     await updateTaskApplication(item.id, {
       title: item.title,
@@ -117,6 +122,8 @@ const changeApplicationStatus = async (item: TaskApplication) => {
     if (selectedTask.value) {
       await loadTaskApplications(selectedTask.value.taskNum);
     }
+  } finally {
+    updatingApplicationId.value = null;
   }
 };
 
@@ -203,6 +210,8 @@ const removeTask = async () => {
     ElMessage.warning("请先选择一个任务");
     return;
   }
+  if (removingTask.value) return;
+  removingTask.value = true;
   const target = selectedTask.value;
   try {
     await ElMessageBox.confirm(`确定删除任务「${target.title}」？关联的学习会话、学习报告、应用场景等数据将被一并删除。`, "确认删除", {
@@ -210,14 +219,16 @@ const removeTask = async () => {
       cancelButtonText: "取消",
       type: "warning",
     });
+    const res = await request.del(`/tasks/${target.taskId}`, {});
+    if (res.code === 200) {
+      ElMessage.success(`任务 ${target.title} 删除成功`);
+      tasks.value = tasks.value.filter((item) => item.taskId !== target.taskId);
+      selectedTaskId.value = tasks.value[0]?.taskId ?? null;
+    }
   } catch {
-    return; // 用户取消
-  }
-  const res = await request.del(`/tasks/${target.taskId}`, {});
-  if (res.code === 200) {
-    ElMessage.success(`任务 ${target.title} 删除成功`);
-    tasks.value = tasks.value.filter((item) => item.taskId !== target.taskId);
-    selectedTaskId.value = tasks.value[0]?.taskId ?? null;
+    // 用户取消或删除失败，保持页面状态
+  } finally {
+    removingTask.value = false;
   }
 };
 
@@ -237,6 +248,8 @@ const weightsSum = computed(() =>
 );
 
 const openWeightsDialog = async () => {
+  if (weightsLoading.value) return;
+  weightsLoading.value = true;
   try {
     const res = await getPriorityWeights();
     const data = res?.data;
@@ -248,8 +261,10 @@ const openWeightsDialog = async () => {
     }
   } catch {
     // 读取失败时保持默认值
+  } finally {
+    weightsLoading.value = false;
+    weightsDialogVisible.value = true;
   }
-  weightsDialogVisible.value = true;
 };
 
 const saveWeights = async () => {
@@ -385,6 +400,8 @@ onMounted(() => {
                       v-model="item.status"
                       size="small"
                       class="application-status"
+                      :loading="updatingApplicationId === item.id"
+                      :disabled="updatingApplicationId !== null"
                       @change="changeApplicationStatus(item)"
                     >
                       <el-option
@@ -413,8 +430,8 @@ onMounted(() => {
           <el-button type="success" size="large" @click="startTask">开始任务</el-button>
           <el-button @click="addTask">添加任务</el-button>
           <el-button @click="changeTask">更新任务</el-button>
-          <el-button @click="openWeightsDialog">权重配置</el-button>
-          <el-button type="danger" @click="removeTask">删除任务</el-button>
+          <el-button :loading="weightsLoading" @click="openWeightsDialog">权重配置</el-button>
+          <el-button type="danger" :loading="removingTask" @click="removeTask">删除任务</el-button>
         </aside>
       </main>
     </div>