diff --git a/frontend/src/components/TaskForm.vue b/frontend/src/components/TaskForm.vue
new file mode 100644
index 00000000..adf665c1
--- /dev/null
+++ b/frontend/src/components/TaskForm.vue
@@ -0,0 +1,152 @@
+<template>
+  <el-dialog :title="isEdit ? '编辑任务' : '新增任务'" v-model="visible" width="600px" @close="onClose">
+    <el-form ref="formRef" :model="form" :rules="rules" label-width="100px">
+      <el-form-item label="标题" prop="title">
+        <el-input v-model="form.title" />
+      </el-form-item>
+      <el-form-item label="描述" prop="description">
+        <el-input v-model="form.description" type="textarea" />
+      </el-form-item>
+      <el-form-item label="里程碑" prop="milestone_id">
+        <el-select v-model="form.milestone_id" placeholder="请选择">
+          <el-option v-for="m in milestones" :key="m.id" :label="m.name" :value="m.id" />
+        </el-select>
+      </el-form-item>
+      <el-form-item label="负责人" prop="assignee_id">
+        <el-input v-model="form.assignee_id" placeholder="用户ID" />
+      </el-form-item>
+      <el-form-item label="优先级" prop="priority">
+        <el-select v-model="form.priority" placeholder="请选择">
+          <el-option v-for="p in priorities" :key="p" :label="p" :value="p" />
+        </el-select>
+      </el-form-item>
+      <el-form-item label="截止日期" prop="due_date">
+        <el-date-picker v-model="form.due_date" type="date" placeholder="选择日期" value-format="YYYY-MM-DD" />
+      </el-form-item>
+      <el-form-item label="状态" prop="status">
+        <el-select v-model="form.status" placeholder="请选择">
+          <el-option v-for="s in statuses" :key="s" :label="s" :value="s" />
+        </el-select>
+      </el-form-item>
+    </el-form>
+    <template #footer>
+      <el-button @click="onClose">取消</el-button>
+      <el-button type="primary" :loading="submitting" @click="onSubmit">提交</el-button>
+    </template>
+  </el-dialog>
+</template>
+
+<script setup lang="ts">
+import { computed, reactive, ref, watch } from "vue";
+import type { FormInstance, FormRules } from "element-plus";
+import { ElMessage } from "element-plus";
+import { createTask, updateTask } from "../api/tasks";
+import { useStudyStore } from "../store/study";
+
+interface Props {
+  modelValue: boolean;
+  task?: Record<string, any>;
+  milestones: any[];
+}
+
+const props = defineProps<Props>();
+const emit = defineEmits(["update:modelValue", "success"]);
+
+const formRef = ref<FormInstance>();
+const study = useStudyStore();
+const visible = computed({
+  get: () => props.modelValue,
+  set: (v: boolean) => emit("update:modelValue", v),
+});
+
+const priorities = ["LOW", "MEDIUM", "HIGH"];
+const statuses = ["TODO", "DOING", "DONE", "BLOCKED"];
+
+const form = reactive({
+  title: "",
+  description: "",
+  milestone_id: "",
+  assignee_id: "",
+  priority: "MEDIUM",
+  due_date: "",
+  status: "TODO",
+});
+
+const rules: FormRules = {
+  title: [{ required: true, message: "请输入标题", trigger: "blur" }],
+  priority: [{ required: true, message: "请选择优先级", trigger: "change" }],
+  status: [{ required: true, message: "请选择状态", trigger: "change" }],
+};
+
+const submitting = ref(false);
+const isEdit = computed(() => !!props.task);
+
+watch(
+  () => props.task,
+  (val) => {
+    if (val) {
+      form.title = val.title || "";
+      form.description = val.description || "";
+      form.milestone_id = val.milestone_id || "";
+      form.assignee_id = val.assignee_id || "";
+      form.priority = val.priority || "MEDIUM";
+      form.due_date = val.due_date || "";
+      form.status = val.status || "TODO";
+    } else {
+      form.title = "";
+      form.description = "";
+      form.milestone_id = "";
+      form.assignee_id = "";
+      form.priority = "MEDIUM";
+      form.due_date = "";
+      form.status = "TODO";
+    }
+  },
+  { immediate: true }
+);
+
+const onClose = () => {
+  visible.value = false;
+};
+
+const onSubmit = async () => {
+  if (!formRef.value) return;
+  await formRef.value.validate(async (valid) => {
+    if (!valid) return;
+    if (!study.currentStudy) {
+      ElMessage.error("未选择项目");
+      return;
+    }
+    submitting.value = true;
+    try {
+    const payload: Record<string, any> = {};
+    const uuidLike = /^[0-9a-fA-F-]{36}$/;
+    Object.entries(form).forEach(([k, v]) => {
+      if (v !== "" && v !== null && v !== undefined) {
+        payload[k] = v;
+      }
+    });
+    if (payload.assignee_id && !uuidLike.test(String(payload.assignee_id))) {
+      ElMessage.warning("负责人ID 需为有效用户ID，已忽略该字段");
+      delete payload.assignee_id;
+    }
+    if (payload.milestone_id && !uuidLike.test(String(payload.milestone_id))) {
+      ElMessage.warning("里程碑无效，已忽略该字段");
+      delete payload.milestone_id;
+    }
+      if (isEdit.value && props.task) {
+        await updateTask(study.currentStudy.id, props.task.id, payload);
+      } else {
+        await createTask(study.currentStudy.id, payload);
+      }
+      ElMessage.success("提交成功");
+      emit("success");
+      onClose();
+    } catch (e: any) {
+      ElMessage.error(e?.response?.data?.message || "提交失败");
+    } finally {
+      submitting.value = false;
+    }
+  });
+};
+</script>
diff --git a/frontend/src/views/Tasks.vue b/frontend/src/views/Tasks.vue
index 51d7406c..29b719b9 100644
--- a/frontend/src/views/Tasks.vue
+++ b/frontend/src/views/Tasks.vue
@@ -1,13 +1,169 @@
 <template>
   <div class="page">
-    <el-card><h2>任务</h2></el-card>
+    <el-card class="mb-12">
+      <div class="filters">
+        <el-select v-model="filters.status" placeholder="状态" clearable @change="loadTasks">
+          <el-option v-for="s in statuses" :key="s" :label="s" :value="s" />
+        </el-select>
+        <el-select v-model="filters.milestone_id" placeholder="里程碑" clearable @change="loadTasks">
+          <el-option v-for="m in milestones" :key="m.id" :label="m.name" :value="m.id" />
+        </el-select>
+        <el-input v-model="filters.assignee_id" placeholder="负责人ID" style="width: 180px" @change="loadTasks" />
+        <div class="spacer" />
+        <el-button type="primary" v-if="canEdit" @click="openCreate">新增任务</el-button>
+      </div>
+    </el-card>
+
+    <el-card>
+      <el-table :data="tasks" v-loading="loading" style="width: 100%">
+        <el-table-column prop="title" label="标题" />
+        <el-table-column prop="milestone_id" label="里程碑" />
+        <el-table-column prop="assignee_id" label="负责人" width="160" />
+        <el-table-column prop="priority" label="优先级" width="100" />
+        <el-table-column prop="status" label="状态" width="120" />
+        <el-table-column prop="due_date" label="截止日期" width="140" />
+        <el-table-column label="操作" width="120" v-if="canEdit">
+          <template #default="scope">
+            <el-button type="primary" link size="small" @click="openEdit(scope.row)">编辑</el-button>
+          </template>
+        </el-table-column>
+      </el-table>
+      <el-pagination
+        class="pagination"
+        layout="prev, pager, next"
+        :page-size="pageSize"
+        :current-page="page"
+        :total="total"
+        @current-change="onPageChange"
+      />
+    </el-card>
+
+    <TaskForm v-model="showForm" :task="editingTask" :milestones="milestones" @success="loadTasks" />
   </div>
 </template>
 
-<script setup lang="ts"></script>
+<script setup lang="ts">
+import { onMounted, ref, computed } from "vue";
+import { ElMessage } from "element-plus";
+import { fetchTasks } from "../api/tasks";
+import { fetchMilestones } from "../api/milestones";
+import { useStudyStore } from "../store/study";
+import { useAuthStore } from "../store/auth";
+import TaskForm from "../components/TaskForm.vue";
+
+const study = useStudyStore();
+const auth = useAuthStore();
+
+const tasks = ref<any[]>([]);
+const milestones = ref<any[]>([]);
+const loading = ref(false);
+const total = ref(0);
+const page = ref(1);
+const pageSize = 10;
+
+const statuses = ["TODO", "DOING", "DONE", "BLOCKED"];
+
+const filters = ref({
+  status: "",
+  milestone_id: "",
+  assignee_id: "",
+});
+
+const showForm = ref(false);
+const editingTask = ref<any | null>(null);
+
+const canEdit = computed(() => {
+  const role = auth.user?.role;
+  // 简化：ADMIN/PM 可编辑
+  return role === "ADMIN" || role === "PM";
+});
+
+const loadMilestones = async () => {
+  if (!study.currentStudy) return;
+  try {
+    const { data } = await fetchMilestones(study.currentStudy.id);
+    milestones.value = data.items || data; // 兼容
+  } catch (e: any) {
+    ElMessage.error(e?.response?.data?.message || "里程碑加载失败");
+  }
+};
+
+const loadTasks = async () => {
+  if (!study.currentStudy) return;
+  loading.value = true;
+  try {
+    const params: Record<string, any> = {
+      skip: (page.value - 1) * pageSize,
+      limit: pageSize,
+    };
+    if (filters.value.status) params.status = filters.value.status;
+    if (filters.value.milestone_id) params.milestone_id = filters.value.milestone_id;
+    if (filters.value.assignee_id) params.assignee_id = filters.value.assignee_id;
+
+    const { data } = await fetchTasks(study.currentStudy.id, params);
+    if (Array.isArray(data)) {
+      tasks.value = data;
+      total.value = data.length;
+    } else {
+      tasks.value = data.items || [];
+      total.value = data.total || tasks.value.length;
+    }
+  } catch (e: any) {
+    ElMessage.error(e?.response?.data?.message || "任务加载失败");
+  } finally {
+    loading.value = false;
+  }
+};
+
+const onPageChange = (p: number) => {
+  page.value = p;
+  loadTasks();
+};
+
+const openCreate = () => {
+  editingTask.value = null;
+  showForm.value = true;
+};
+
+const openEdit = (row: any) => {
+  editingTask.value = row;
+  showForm.value = true;
+};
+
+const ensureUser = async () => {
+  if (!auth.user && auth.token) {
+    try {
+      await auth.fetchMe();
+    } catch {
+      // ignore, canEdit 将保持 false
+    }
+  }
+};
+
+onMounted(async () => {
+  await ensureUser();
+  loadMilestones();
+  loadTasks();
+});
+</script>
 
 <style scoped>
 .page {
   padding: 16px;
 }
+.filters {
+  display: flex;
+  gap: 8px;
+  align-items: center;
+}
+.spacer {
+  flex: 1;
+}
+.pagination {
+  margin-top: 12px;
+  text-align: right;
+}
+.mb-12 {
+  margin-bottom: 12px;
+}
 </style>