diff --git a/README.md b/README.md
index b82be51..fafc85f 100644
--- a/README.md
+++ b/README.md
@@ -131,6 +131,7 @@ GET /api/admin/log/login
 GET /api/admin/users
 POST /api/admin/users
 PUT /api/admin/users/:id/password
+DELETE /api/admin/text-messages/:id
 GET /api/nodeinfo
 GET /api/nodeinfo/:id
 GET /api/map-reports
diff --git a/db_test.go b/db_test.go
index 413b4d9..3e25fd3 100644
--- a/db_test.go
+++ b/db_test.go
@@ -361,6 +361,32 @@ func TestInsertTextMessageAppendsRows(t *testing.T) {
 	}
 }
 
+func TestDeleteTextMessageDeletesRows(t *testing.T) {
+	st := openTestStore(t)
+	defer st.Close()
+
+	if err := st.InsertTextMessage(textMessageTestRecord("hello"), mqttClientInfo{}); err != nil {
+		t.Fatalf("InsertTextMessage() error = %v", err)
+	}
+	var id uint64
+	if err := rawTestDB(t, st).QueryRow("SELECT id FROM text_message LIMIT 1").Scan(&id); err != nil {
+		t.Fatal(err)
+	}
+	if err := st.DeleteTextMessage(id); err != nil {
+		t.Fatalf("DeleteTextMessage() error = %v", err)
+	}
+	var count int
+	if err := rawTestDB(t, st).QueryRow("SELECT COUNT(*) FROM text_message WHERE id = ?", id).Scan(&count); err != nil {
+		t.Fatal(err)
+	}
+	if count != 0 {
+		t.Fatalf("text_message count = %d, want 0", count)
+	}
+	if err := st.DeleteTextMessage(id); !errors.Is(err, gorm.ErrRecordNotFound) {
+		t.Fatalf("DeleteTextMessage(missing) error = %v, want record not found", err)
+	}
+}
+
 func TestInsertTextMessageStoresClientInfo(t *testing.T) {
 	st := openTestStore(t)
 	defer st.Close()
diff --git a/meshmap_frontend/src/App.vue b/meshmap_frontend/src/App.vue
index 55d2ea2..e429bde 100644
--- a/meshmap_frontend/src/App.vue
+++ b/meshmap_frontend/src/App.vue
@@ -1,6 +1,6 @@
 <script setup lang="ts">
 import { computed, onBeforeUnmount, onMounted, ref } from 'vue'
-import { adminLogout, getAdminMe, getHealth, getMapReports, getNodeInfo, getPositions, getTextMessages } from './api'
+import { adminLogout, deleteNode, deleteTextMessage, getAdminMe, getHealth, getMapReports, getNodeInfo, getPositions, getTextMessages } from './api'
 import AdminDashboard from './components/AdminDashboard.vue'
 import AdminLogin from './components/AdminLogin.vue'
 import AdminLoginLogs from './components/AdminLoginLogs.vue'
@@ -182,11 +182,36 @@ async function logoutAdmin() {
   }
 }
 
+async function deleteMessage(message: TextMessage) {
+  try {
+    await deleteTextMessage(message.id)
+    messages.value = messages.value.filter((item) => item.id !== message.id)
+  } catch (err) {
+    error.value = err instanceof Error ? err.message : String(err)
+  }
+}
+
+async function deleteNodeById(nodeId: string) {
+  try {
+    await deleteNode(nodeId)
+    nodeInfoSource.value = nodeInfoSource.value.filter((node) => node.node_id !== nodeId)
+    pagedNodeInfo.value = pagedNodeInfo.value.filter((node) => node.node_id !== nodeId)
+    mapReportSource.value = mapReportSource.value.filter((report) => report.node_id !== nodeId)
+    if (selectedNodeId.value === nodeId) {
+      selectedNodeId.value = null
+    }
+    await loadNodePage(nodePage.value, false)
+  } catch (err) {
+    error.value = err instanceof Error ? err.message : String(err)
+  }
+}
+
 onMounted(() => {
   if (isAdminPage) {
     checkAdminSession()
     return
   }
+  checkAdminSession()
   refresh()
   refreshTimer = window.setInterval(() => refresh(false), 5000)
 })
@@ -252,14 +277,18 @@ onBeforeUnmount(() => {
           :selected-node-id="selectedNodeId"
           :loading-older="chatLoadingOlder"
           :has-more-messages="chatHasMore"
+          :is-admin="!!adminUser"
           @select-node="selectedNodeId = $event"
           @load-older="loadOlderMessages"
+          @delete-message="deleteMessage"
         />
         <MeshMap
           :nodes="mapNodes"
           :selected-node-id="selectedNodeId"
+          :is-admin="!!adminUser"
           @select-node="selectedNodeId = $event"
           @clear-node="selectedNodeId = null"
+          @delete-node="deleteNodeById"
         />
       </section>
 
@@ -270,8 +299,10 @@ onBeforeUnmount(() => {
         :page-size="nodePageSize"
         :total="nodeTotal"
         :loading="nodePageLoading || loading"
+        :is-admin="!!adminUser"
         @select-node="selectedNodeId = $event"
         @page-change="loadNodePage"
+        @delete-node="deleteNodeById"
       />
     </template>
   </main>
diff --git a/meshmap_frontend/src/api.ts b/meshmap_frontend/src/api.ts
index b594cf1..83927e2 100644
--- a/meshmap_frontend/src/api.ts
+++ b/meshmap_frontend/src/api.ts
@@ -49,6 +49,10 @@ function putJSON<T>(path: string, body?: unknown): Promise<T> {
   })
 }
 
+function deleteJSON<T>(path: string): Promise<T> {
+  return requestJSON<T>(path, { method: 'DELETE' })
+}
+
 export function getHealth(): Promise<HealthStatus> {
   return getJSON<HealthStatus>('/api/health')
 }
@@ -65,6 +69,14 @@ export function getTextMessages(limit = 100, offset = 0): Promise<ListResponse<T
   return getJSON<ListResponse<TextMessage>>(`/api/text-messages?limit=${limit}&offset=${offset}`)
 }
 
+export function deleteTextMessage(id: number): Promise<{ status: string }> {
+  return deleteJSON<{ status: string }>(`/api/admin/text-messages/${id}`)
+}
+
+export function deleteNode(nodeId: string): Promise<{ status: string }> {
+  return deleteJSON<{ status: string }>(`/api/admin/nodes/${encodeURIComponent(nodeId)}`)
+}
+
 export function getPositions(limit = 500): Promise<ListResponse<PositionRecord>> {
   return getJSON<ListResponse<PositionRecord>>(`/api/positions?limit=${limit}`)
 }
diff --git a/meshmap_frontend/src/components/ChatPanel.vue b/meshmap_frontend/src/components/ChatPanel.vue
index 0616d43..fc23a0e 100644
--- a/meshmap_frontend/src/components/ChatPanel.vue
+++ b/meshmap_frontend/src/components/ChatPanel.vue
@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { nextTick, onBeforeUpdate, onMounted, onUpdated, ref } from 'vue'
+import { nextTick, onBeforeUnmount, onBeforeUpdate, onMounted, onUpdated, ref } from 'vue'
 import type { NodeInfoById, TextMessage } from '../types'
 
 const props = defineProps<{
@@ -8,14 +8,19 @@ const props = defineProps<{
   selectedNodeId: string | null
   loadingOlder: boolean
   hasMoreMessages: boolean
+  isAdmin: boolean
 }>()
 
 const emit = defineEmits<{
   'select-node': [nodeId: string]
   'load-older': []
+  'delete-message': [message: TextMessage]
 }>()
 
 const panelRef = ref<HTMLElement | null>(null)
+const menuMessage = ref<TextMessage | null>(null)
+const menuX = ref(0)
+const menuY = ref(0)
 const topThreshold = 8
 const bottomThreshold = 40
 
@@ -44,7 +49,35 @@ function clearRestoreState() {
   restoreMessageCount = 0
 }
 
+function closeMessageMenu() {
+  menuMessage.value = null
+}
+
+function openMessageMenu(message: TextMessage, event: MouseEvent) {
+  if (!props.isAdmin) {
+    return
+  }
+  emit('select-node', message.from_id)
+  menuMessage.value = message
+  menuX.value = event.clientX
+  menuY.value = event.clientY
+}
+
+function deleteSelectedMessage() {
+  if (menuMessage.value) {
+    emit('delete-message', menuMessage.value)
+  }
+  closeMessageMenu()
+}
+
+function handleKeydown(event: KeyboardEvent) {
+  if (event.key === 'Escape') {
+    closeMessageMenu()
+  }
+}
+
 function handleScroll() {
+  closeMessageMenu()
   const el = panelRef.value
   if (
     !el ||
@@ -72,6 +105,8 @@ onBeforeUpdate(() => {
 })
 
 onMounted(async () => {
+  window.addEventListener('click', closeMessageMenu)
+  window.addEventListener('keydown', handleKeydown)
   await nextTick()
   const el = panelRef.value
   if (el) {
@@ -80,6 +115,11 @@ onMounted(async () => {
   }
 })
 
+onBeforeUnmount(() => {
+  window.removeEventListener('click', closeMessageMenu)
+  window.removeEventListener('keydown', handleKeydown)
+})
+
 onUpdated(() => {
   const el = panelRef.value
   if (!el) {
@@ -124,6 +164,7 @@ onUpdated(() => {
       :class="{ selected: selectedNodeId === message.from_id }"
       type="button"
       @click="emit('select-node', message.from_id)"
+      @contextmenu.prevent.stop="openMessageMenu(message, $event)"
     >
       <span class="chat-meta">
         <strong>{{ senderName(message) }}</strong>
@@ -132,5 +173,14 @@ onUpdated(() => {
       <span class="chat-topic">{{ message.topic }}</span>
       <span class="chat-text">{{ message.text || '[binary]' }}</span>
     </button>
+
+    <div
+      v-if="menuMessage"
+      class="context-menu"
+      :style="{ left: `${menuX}px`, top: `${menuY}px` }"
+      @click.stop
+    >
+      <button class="danger" type="button" @click="deleteSelectedMessage">删除</button>
+    </div>
   </aside>
 </template>
diff --git a/meshmap_frontend/src/components/MeshMap.vue b/meshmap_frontend/src/components/MeshMap.vue
index 0e47d4b..5aebcfb 100644
--- a/meshmap_frontend/src/components/MeshMap.vue
+++ b/meshmap_frontend/src/components/MeshMap.vue
@@ -7,14 +7,19 @@ import type { MapNode } from '../types'
 const props = defineProps<{
   nodes: MapNode[]
   selectedNodeId: string | null
+  isAdmin: boolean
 }>()
 
 const emit = defineEmits<{
   'select-node': [nodeId: string]
   'clear-node': []
+  'delete-node': [nodeId: string]
 }>()
 
 const mapEl = ref<HTMLElement | null>(null)
+const menuNodeId = ref<string | null>(null)
+const menuX = ref(0)
+const menuY = ref(0)
 let map: L.Map | null = null
 let markerLayer: L.LayerGroup | null = null
 let hasFitBounds = false
@@ -37,7 +42,10 @@ onMounted(async () => {
     maxZoom: 19,
     attribution: '&copy; OpenStreetMap contributors',
   }).addTo(map)
-  map.on('click', () => emit('clear-node'))
+  map.on('click', () => {
+    closeNodeMenu()
+    emit('clear-node')
+  })
   markerLayer = L.layerGroup().addTo(map)
   renderMarkers(true)
 })
diff --git a/meshmap_frontend/src/components/NodeListPanel.vue b/meshmap_frontend/src/components/NodeListPanel.vue
index ff5673d..0f990b2 100644
--- a/meshmap_frontend/src/components/NodeListPanel.vue
+++ b/meshmap_frontend/src/components/NodeListPanel.vue
@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { computed } from 'vue'
+import { computed, onBeforeUnmount, onMounted, ref } from 'vue'
 import type { NodeInfo } from '../types'
 
 const props = defineProps<{
@@ -9,20 +9,62 @@ const props = defineProps<{
   pageSize: number
   total: number
   loading: boolean
+  isAdmin: boolean
 }>()
 
 const emit = defineEmits<{
   'select-node': [nodeId: string]
   'page-change': [page: number]
+  'delete-node': [nodeId: string]
 }>()
 
 const totalPages = computed(() => Math.max(1, Math.ceil(props.total / props.pageSize)))
 const canPrev = computed(() => props.page > 1)
 const canNext = computed(() => props.page < totalPages.value)
+const menuNode = ref<NodeInfo | null>(null)
+const menuX = ref(0)
+const menuY = ref(0)
 
 function formatTime(value: string): string {
   return new Date(value).toLocaleString()
 }
+
+function closeNodeMenu() {
+  menuNode.value = null
+}
+
+function openNodeMenu(node: NodeInfo, event: MouseEvent) {
+  if (!props.isAdmin) {
+    return
+  }
+  emit('select-node', node.node_id)
+  menuNode.value = node
+  menuX.value = event.clientX
+  menuY.value = event.clientY
+}
+
+function deleteSelectedNode() {
+  if (menuNode.value) {
+    emit('delete-node', menuNode.value.node_id)
+  }
+  closeNodeMenu()
+}
+
+function handleKeydown(event: KeyboardEvent) {
+  if (event.key === 'Escape') {
+    closeNodeMenu()
+  }
+}
+
+onMounted(() => {
+  window.addEventListener('click', closeNodeMenu)
+  window.addEventListener('keydown', handleKeydown)
+})
+
+onBeforeUnmount(() => {
+  window.removeEventListener('click', closeNodeMenu)
+  window.removeEventListener('keydown', handleKeydown)
+})
 </script>
 
 <template>
@@ -35,7 +77,7 @@ function formatTime(value: string): string {
       <span class="badge">共 {{ total }} 条</span>
     </div>
 
-    <div class="node-table-wrap">
+    <div class="node-table-wrap" @scroll="closeNodeMenu">
       <table class="node-table">
         <thead>
           <tr>
@@ -55,6 +97,7 @@ function formatTime(value: string): string {
             class="node-row"
             :class="{ selected: selectedNodeId === node.node_id }"
             @click="emit('select-node', node.node_id)"
+            @contextmenu.prevent.stop="openNodeMenu(node, $event)"
           >
             <td>{{ node.node_id }}</td>
             <td>{{ node.long_name || '-' }}</td>
@@ -69,6 +112,15 @@ function formatTime(value: string): string {
       <div v-if="nodes.length === 0" class="empty">暂无节点数据</div>
     </div>
 
+    <div
+      v-if="menuNode"
+      class="context-menu"
+      :style="{ left: `${menuX}px`, top: `${menuY}px` }"
+      @click.stop
+    >
+      <button class="danger" type="button" @click="deleteSelectedNode">删除</button>
+    </div>
+
     <div class="pagination">
       <button :disabled="loading || !canPrev" @click="emit('page-change', page - 1)">上一页</button>
       <span>第 {{ page }} / {{ totalPages }} 页</span>
diff --git a/meshmap_frontend/src/style.css b/meshmap_frontend/src/style.css
index d7a3af6..2c27641 100644
--- a/meshmap_frontend/src/style.css
+++ b/meshmap_frontend/src/style.css
@@ -220,6 +220,35 @@ h3 {
   line-height: 1.35;
 }
 
+.context-menu {
+  position: fixed;
+  z-index: 2000;
+  min-width: 120px;
+  border: 1px solid #dbe4ef;
+  border-radius: 10px;
+  padding: 6px;
+  background: #fff;
+  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.18);
+}
+
+.context-menu button {
+  width: 100%;
+  border: 0;
+  border-radius: 8px;
+  padding: 8px 10px;
+  text-align: left;
+  font: inherit;
+  background: transparent;
+}
+
+.context-menu button:hover {
+  background: #f8fafc;
+}
+
+.context-menu button.danger {
+  color: #b91c1c;
+}
+
 .map-panel {
   min-width: 0;
 }
diff --git a/store_query.go b/store_query.go
index dd4f44e..81f624c 100644
--- a/store_query.go
+++ b/store_query.go
@@ -83,6 +83,23 @@ func (s *store) GetMapReport(nodeID string) (*mapReportRecord, error) {
 	return &row, nil
 }
 
+func (s *store) DeleteNode(nodeID string) error {
+	return s.db.Transaction(func(tx *gorm.DB) error {
+		nodeResult := tx.Where("node_id = ?", nodeID).Delete(&nodeInfoRecord{})
+		if nodeResult.Error != nil {
+			return nodeResult.Error
+		}
+		reportResult := tx.Where("node_id = ?", nodeID).Delete(&mapReportRecord{})
+		if reportResult.Error != nil {
+			return reportResult.Error
+		}
+		if nodeResult.RowsAffected+reportResult.RowsAffected == 0 {
+			return gorm.ErrRecordNotFound
+		}
+		return nil
+	})
+}
+
 func applyNodeFilters(q *gorm.DB, opts listOptions) *gorm.DB {
 	if opts.NodeID != "" {
 		q = q.Where("node_id = ?", opts.NodeID)
@@ -101,6 +118,17 @@ func (s *store) ListTextMessages(opts listOptions) ([]textMessageRecord, error)
 	return rows, s.listAppendRows(opts, &rows).Error
 }
 
+func (s *store) DeleteTextMessage(id uint64) error {
+	result := s.db.Where("id = ?", id).Delete(&textMessageRecord{})
+	if result.Error != nil {
+		return result.Error
+	}
+	if result.RowsAffected == 0 {
+		return gorm.ErrRecordNotFound
+	}
+	return nil
+}
+
 func (s *store) ListPositions(opts listOptions) ([]positionRecord, error) {
 	var rows []positionRecord
 	return rows, s.listAppendRows(opts, &rows).Error
diff --git a/web.go b/web.go
index 6201483..02565da 100644
--- a/web.go
+++ b/web.go
@@ -218,6 +218,36 @@ func registerAdminRoutes(r gin.IRouter, store *store, sessions *sessionManager,
 		rows, err := store.ListLoginLogs(opts)
 		writeListResponse(c, rows, opts, err, loginLogDTO)
 	})
+	protected.DELETE("/text-messages/:id", func(c *gin.Context) {
+		id, err := strconv.ParseUint(c.Param("id"), 10, 64)
+		if err != nil || id == 0 {
+			c.JSON(http.StatusBadRequest, gin.H{"error": "invalid message id"})
+			return
+		}
+		if err := store.DeleteTextMessage(id); errors.Is(err, gorm.ErrRecordNotFound) {
+			c.JSON(http.StatusNotFound, gin.H{"error": "message not found"})
+			return
+		} else if err != nil {
+			c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+			return
+		}
+		c.JSON(http.StatusOK, gin.H{"status": "ok"})
+	})
+	protected.DELETE("/nodes/:id", func(c *gin.Context) {
+		nodeID := c.Param("id")
+		if nodeID == "" {
+			c.JSON(http.StatusBadRequest, gin.H{"error": "invalid node id"})
+			return
+		}
+		if err := store.DeleteNode(nodeID); errors.Is(err, gorm.ErrRecordNotFound) {
+			c.JSON(http.StatusNotFound, gin.H{"error": "node not found"})
+			return
+		} else if err != nil {
+			c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+			return
+		}
+		c.JSON(http.StatusOK, gin.H{"status": "ok"})
+	})
 }
 
 func registerNodeInfoRoutes(r gin.IRouter, store *store, path string) {