diff --git a/web/src/views/projects/IssueDetailView.vue b/web/src/views/projects/IssueDetailView.vue
new file mode 100644
index 0000000..4840241
--- /dev/null
+++ b/web/src/views/projects/IssueDetailView.vue
@@ -0,0 +1,179 @@
+<template>
+  <AppShell>
+    <NSpin :show="loading">
+      <div v-if="issue" class="space-y-6">
+        <!-- Header -->
+        <div class="flex items-center justify-between">
+          <div class="flex items-center gap-3">
+            <span class="text-gray-400 font-mono text-sm">#{{ issue.number }}</span>
+            <h1 class="text-2xl font-semibold">{{ issue.title }}</h1>
+            <NTag :type="issue.status === 'open' ? 'success' : 'default'" size="small">
+              {{ issue.status === 'open' ? '开放' : '关闭' }}
+            </NTag>
+          </div>
+          <div class="flex items-center gap-2">
+            <NButton
+              v-if="issue.status === 'open'"
+              type="warning"
+              size="small"
+              :loading="toggling"
+              @click="onClose"
+            >
+              关闭 Issue
+            </NButton>
+            <NButton
+              v-else
+              type="primary"
+              size="small"
+              :loading="toggling"
+              @click="onReopen"
+            >
+              重新开放
+            </NButton>
+            <NButton size="small" @click="router.back()">返回</NButton>
+          </div>
+        </div>
+
+        <!-- Mount card -->
+        <NCard title="挂载">
+          <NSelect
+            :value="mountedRequirementNumber"
+            :options="requirementOptions"
+            placeholder="未挂载"
+            clearable
+            @update:value="onMountChange"
+          />
+        </NCard>
+
+        <!-- Assignee card -->
+        <NCard title="指派">
+          <div class="flex items-center gap-4">
+            <span class="text-sm text-gray-600">
+              {{ issue.assignee_id ? `已指派：${issue.assignee_id}` : '暂未指派' }}
+            </span>
+            <div class="flex items-center gap-2">
+              <NButton size="small" :loading="assigning" @click="onAssignToMe">指派给我</NButton>
+              <NButton
+                v-if="issue.assignee_id"
+                size="small"
+                :loading="assigning"
+                @click="onUnassign"
+              >
+                取消指派
+              </NButton>
+            </div>
+          </div>
+        </NCard>
+
+        <!-- Description card -->
+        <NCard title="描述">
+          <p v-if="issue.description" class="text-gray-700 whitespace-pre-wrap">
+            {{ issue.description }}
+          </p>
+          <p v-else class="text-gray-400 text-sm">暂无描述</p>
+        </NCard>
+      </div>
+
+      <div v-else-if="!loading" class="text-gray-400 text-sm py-8 text-center">
+        Issue 不存在或无权访问。
+      </div>
+    </NSpin>
+  </AppShell>
+</template>
+
+<script setup lang="ts">
+import { ref, computed, onMounted } from 'vue'
+import { useRoute, useRouter } from 'vue-router'
+import { NCard, NButton, NTag, NSpin, NSelect } from 'naive-ui'
+import AppShell from '@/layouts/AppShell.vue'
+import { projectsApi } from '@/api/projects'
+import { useAuthStore } from '@/stores/auth'
+import type { Issue, Requirement } from '@/api/projects'
+
+const route = useRoute()
+const router = useRouter()
+const auth = useAuthStore()
+
+const slug = route.params.slug as string
+const number = Number(route.params.number)
+
+const loading = ref(false)
+const toggling = ref(false)
+const assigning = ref(false)
+
+const issue = ref<Issue | null>(null)
+const requirements = ref<Requirement[]>([])
+
+const requirementOptions = computed(() =>
+  requirements.value.map((r) => ({ label: `R-${r.number}: ${r.title}`, value: r.number })),
+)
+
+const mountedRequirementNumber = computed<number | null>(() => {
+  if (!issue.value?.requirement_id) return null
+  const req = requirements.value.find((r) => r.id === issue.value!.requirement_id)
+  return req?.number ?? null
+})
+
+async function fetchData() {
+  loading.value = true
+  try {
+    const [fetchedIssue, reqs] = await Promise.all([
+      projectsApi.getIssue(slug, number),
+      projectsApi.listRequirements(slug),
+    ])
+    issue.value = fetchedIssue
+    requirements.value = reqs.items
+  } finally {
+    loading.value = false
+  }
+}
+
+async function onMountChange(v: number | null) {
+  if (!issue.value) return
+  issue.value = await projectsApi.updateIssue(slug, number, { requirement_number: v })
+}
+
+async function onClose() {
+  toggling.value = true
+  try {
+    await projectsApi.closeIssue(slug, number)
+    issue.value = await projectsApi.getIssue(slug, number)
+  } finally {
+    toggling.value = false
+  }
+}
+
+async function onReopen() {
+  toggling.value = true
+  try {
+    await projectsApi.reopenIssue(slug, number)
+    issue.value = await projectsApi.getIssue(slug, number)
+  } finally {
+    toggling.value = false
+  }
+}
+
+async function onAssignToMe() {
+  if (!issue.value) return
+  const userId = auth.user?.id
+  if (!userId) return
+  assigning.value = true
+  try {
+    issue.value = await projectsApi.assignIssue(slug, number, userId)
+  } finally {
+    assigning.value = false
+  }
+}
+
+async function onUnassign() {
+  if (!issue.value) return
+  assigning.value = true
+  try {
+    issue.value = await projectsApi.assignIssue(slug, number, null)
+  } finally {
+    assigning.value = false
+  }
+}
+
+onMounted(fetchData)
+</script>
diff --git a/web/src/views/projects/IssueListView.vue b/web/src/views/projects/IssueListView.vue
new file mode 100644
index 0000000..94506be
--- /dev/null
+++ b/web/src/views/projects/IssueListView.vue
@@ -0,0 +1,216 @@
+<template>
+  <AppShell>
+    <NSpin :show="loading">
+      <div class="space-y-4">
+        <!-- Header -->
+        <div class="flex items-center justify-between">
+          <h1 class="text-2xl font-semibold">Issue 列表</h1>
+          <NButton type="primary" @click="showCreate = true">新建 Issue</NButton>
+        </div>
+
+        <!-- Filter chips -->
+        <div class="flex items-center gap-2 flex-wrap">
+          <NButton
+            :type="filter === 'all' ? 'primary' : 'default'"
+            size="small"
+            @click="setFilter('all')"
+          >
+            全部
+          </NButton>
+          <NButton
+            :type="filter === 'none' ? 'primary' : 'default'"
+            size="small"
+            @click="setFilter('none')"
+          >
+            游离
+          </NButton>
+          <NButton
+            v-for="req in requirements"
+            :key="req.number"
+            :type="filter === String(req.number) ? 'primary' : 'default'"
+            size="small"
+            @click="setFilter(String(req.number))"
+          >
+            R-{{ req.number }}
+          </NButton>
+        </div>
+
+        <!-- Table -->
+        <NDataTable
+          :columns="columns"
+          :data="items"
+          :row-props="rowProps"
+          :bordered="false"
+          striped
+        />
+
+        <div v-if="!loading && items.length === 0" class="text-gray-400 text-sm py-8 text-center">
+          暂无 Issue。
+        </div>
+      </div>
+    </NSpin>
+
+    <!-- Create modal -->
+    <NModal v-model:show="showCreate" preset="card" title="新建 Issue" class="w-full max-w-md">
+      <NForm @submit.prevent="onSubmit">
+        <NFormItem label="标题">
+          <NInput v-model:value="form.title" placeholder="Issue 标题" />
+        </NFormItem>
+        <NFormItem label="描述">
+          <NInput v-model:value="form.description" type="textarea" :rows="4" placeholder="（可选）" />
+        </NFormItem>
+        <NFormItem label="挂载到 Requirement（可选）">
+          <NSelect
+            v-model:value="form.requirement_number"
+            :options="requirementOptions"
+            placeholder="不挂载"
+            clearable
+          />
+        </NFormItem>
+        <div class="flex justify-end gap-2 mt-4">
+          <NButton @click="showCreate = false">取消</NButton>
+          <NButton type="primary" attr-type="submit" :loading="creating">创建</NButton>
+        </div>
+      </NForm>
+      <p v-if="createError" class="text-red-500 text-sm mt-2">{{ createError }}</p>
+    </NModal>
+  </AppShell>
+</template>
+
+<script setup lang="ts">
+import { h, ref, computed, onMounted } from 'vue'
+import { useRoute, useRouter } from 'vue-router'
+import {
+  NButton,
+  NTag,
+  NDataTable,
+  NModal,
+  NForm,
+  NFormItem,
+  NInput,
+  NSelect,
+  NSpin,
+} from 'naive-ui'
+import type { DataTableColumns } from 'naive-ui'
+import AppShell from '@/layouts/AppShell.vue'
+import { projectsApi } from '@/api/projects'
+import type { Issue, Requirement } from '@/api/projects'
+
+const route = useRoute()
+const router = useRouter()
+
+const slug = route.params.slug as string
+
+const loading = ref(false)
+const items = ref<Issue[]>([])
+const requirements = ref<Requirement[]>([])
+const filter = ref<'all' | 'none' | string>('all')
+
+const requirementOptions = computed(() =>
+  requirements.value.map((r) => ({ label: `R-${r.number}: ${r.title}`, value: r.number })),
+)
+
+async function fetchIssues() {
+  loading.value = true
+  try {
+    const params: { requirement?: number | 'none' } = {}
+    if (filter.value === 'none') {
+      params.requirement = 'none'
+    } else if (filter.value !== 'all') {
+      params.requirement = Number(filter.value)
+    }
+    const res = await projectsApi.listIssues(slug, params)
+    items.value = res.items
+  } finally {
+    loading.value = false
+  }
+}
+
+async function setFilter(value: 'all' | 'none' | string) {
+  filter.value = value
+  await fetchIssues()
+}
+
+// ---- Table columns ----
+const columns: DataTableColumns<Issue> = [
+  {
+    title: '#',
+    key: 'number',
+    width: 60,
+    render: (row) => h('span', { class: 'font-mono text-xs text-gray-400' }, `#${row.number}`),
+  },
+  {
+    title: '标题',
+    key: 'title',
+  },
+  {
+    title: 'Requirement',
+    key: 'requirement_id',
+    width: 120,
+    render: (row) => {
+      if (!row.requirement_id) return h('span', { class: 'text-gray-300 text-xs' }, '—')
+      const req = requirements.value.find((r) => r.id === row.requirement_id)
+      return req
+        ? h(NTag, { size: 'small' }, { default: () => `R-${req.number}` })
+        : h('span', { class: 'text-gray-300 text-xs' }, '—')
+    },
+  },
+  {
+    title: '状态',
+    key: 'status',
+    width: 80,
+    render: (row) =>
+      h(
+        NTag,
+        { size: 'small', type: row.status === 'open' ? 'success' : 'default' },
+        { default: () => (row.status === 'open' ? '开放' : '关闭') },
+      ),
+  },
+]
+
+function rowProps(row: Issue) {
+  return {
+    style: 'cursor: pointer',
+    onClick: () => router.push({ name: 'issue-detail', params: { slug, number: row.number } }),
+  }
+}
+
+// ---- Create modal ----
+const showCreate = ref(false)
+const creating = ref(false)
+const createError = ref('')
+const form = ref<{ title: string; description: string; requirement_number: number | null }>({
+  title: '',
+  description: '',
+  requirement_number: null,
+})
+
+async function onSubmit() {
+  createError.value = ''
+  if (!form.value.title.trim()) {
+    createError.value = '标题不能为空'
+    return
+  }
+  creating.value = true
+  try {
+    const body: { title: string; description?: string; requirement_number?: number } = {
+      title: form.value.title,
+    }
+    if (form.value.description) body.description = form.value.description
+    if (form.value.requirement_number !== null) body.requirement_number = form.value.requirement_number
+    const created = await projectsApi.createIssue(slug, body)
+    showCreate.value = false
+    form.value = { title: '', description: '', requirement_number: null }
+    router.push({ name: 'issue-detail', params: { slug, number: created.number } })
+  } catch (e) {
+    createError.value = e instanceof Error ? e.message : '创建失败'
+  } finally {
+    creating.value = false
+  }
+}
+
+onMounted(async () => {
+  const [, reqs] = await Promise.all([fetchIssues(), projectsApi.listRequirements(slug)])
+  requirements.value = reqs.items
+})
+</script>