diff --git a/internal/store/store_query.go b/internal/store/store_query.go
index 4f9e3ec..70412cd 100644
--- a/internal/store/store_query.go
+++ b/internal/store/store_query.go
@@ -232,6 +232,53 @@ func (s *Store) DeleteNode(nodeID string) error {
 	})
 }
 
+// PurgeNode 在「删除节点」菜单触发时执行：除了 nodeinfo + map_report，
+// 还要把 text_message（频道聊天）以及 position/telemetry/routing/traceroute
+// 这些以 from_id 关联的数据包记录一起清理。
+//
+// 任一表删到记录就视为成功；全部为空才返回 ErrRecordNotFound。
+func (s *Store) PurgeNode(nodeID string) error {
+	if nodeID == "" {
+		return gorm.ErrRecordNotFound
+	}
+	return s.db.Transaction(func(tx *gorm.DB) error {
+		var totalAffected int64
+
+		nodeResult := tx.Where("node_id = ?", nodeID).Delete(&NodeInfoRecord{})
+		if nodeResult.Error != nil {
+			return nodeResult.Error
+		}
+		totalAffected += nodeResult.RowsAffected
+
+		reportResult := tx.Where("node_id = ?", nodeID).Delete(&MapReportRecord{})
+		if reportResult.Error != nil {
+			return reportResult.Error
+		}
+		totalAffected += reportResult.RowsAffected
+
+		// 以 from_id 关联：聊天消息 + 数据包流水
+		fromIDTargets := []any{
+			&TextMessageRecord{},
+			&PositionRecord{},
+			&TelemetryRecord{},
+			&RoutingRecord{},
+			&TracerouteRecord{},
+		}
+		for _, model := range fromIDTargets {
+			res := tx.Where("from_id = ?", nodeID).Delete(model)
+			if res.Error != nil {
+				return res.Error
+			}
+			totalAffected += res.RowsAffected
+		}
+
+		if totalAffected == 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)
diff --git a/internal/web/web.go b/internal/web/web.go
index deb4ac3..eaf9013 100644
--- a/internal/web/web.go
+++ b/internal/web/web.go
@@ -338,6 +338,23 @@ func registerAdminRoutes(r gin.IRouter, store *storepkg.Store, sessions *auth.Ma
 		}
 		c.JSON(http.StatusOK, gin.H{"status": "ok"})
 	})
+	// purge：除了 nodeinfo + map_report，还把 text_message 与 position/telemetry/routing/traceroute
+	// 中按 from_id 关联到该节点的记录一并删除。
+	protected.DELETE("/nodes/:id/purge", func(c *gin.Context) {
+		nodeID := c.Param("id")
+		if nodeID == "" {
+			c.JSON(http.StatusBadRequest, gin.H{"error": "invalid node id"})
+			return
+		}
+		if err := store.PurgeNode(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 *storepkg.Store, path string) {
diff --git a/meshmap_frontend/src/App.vue b/meshmap_frontend/src/App.vue
index cf4e751..1cd48d0 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, createNodeBlockingRule, deleteNode, deleteTextMessage, getAdminMe, getHealth, getMapReportViewport, getNodeInfo, getPositions, getTextMessages } from './api'
+import { adminLogout, createNodeBlockingRule, deleteNode, deleteTextMessage, getAdminMe, getHealth, getMapReportViewport, getNodeInfo, getPositions, getTextMessages, purgeNode } from './api'
 import AdminBlockingManagement from './components/AdminBlockingManagement.vue'
 import AdminBot from './components/AdminBot.vue'
 import AdminBotDirect from './components/AdminBotDirect.vue'
@@ -75,6 +75,7 @@ type NodeActionPayload = NodeActionRequest & { reason: string }
 type PendingDeleteAction =
   | { kind: 'delete-message'; message: DeletableTextMessage }
   | { kind: 'delete-node'; nodeId: string }
+  | { kind: 'purge-node'; nodeId: string }
   | ({ kind: 'delete-and-block-node' } & NodeActionRequest)
 let refreshTimer: number | undefined
 let mapBoundsTimer: number | undefined
@@ -202,6 +203,9 @@ const deleteModalTitle = computed(() => {
   if (action.kind === 'delete-node') {
     return '确认删除节点'
   }
+  if (action.kind === 'purge-node') {
+    return '确认删除节点'
+  }
   return '确认删除并屏蔽节点'
 })
 
@@ -219,6 +223,9 @@ const deleteModalMessage = computed(() => {
   if (action.kind === 'delete-node') {
     return '确定要删除这个节点吗？此操作不可撤销。'
   }
+  if (action.kind === 'purge-node') {
+    return '确定要删除这个节点吗？将同时清理该节点的聊天消息和位置/遥测/路由/路径追踪等数据包记录，此操作不可撤销。'
+  }
   if (!action.message) {
     return '确定要删除并屏蔽这个节点吗？请输入屏蔽原因。'
   }
@@ -442,6 +449,10 @@ function requestDeleteNode(nodeId: string) {
   pendingDeleteAction.value = { kind: 'delete-node', nodeId }
 }
 
+function requestPurgeNode(nodeId: string) {
+  pendingDeleteAction.value = { kind: 'purge-node', nodeId }
+}
+
 function requestDeleteAndBlockNode(payload: NodeActionRequest) {
   pendingDeleteAction.value = { kind: 'delete-and-block-node', ...payload }
 }
@@ -467,6 +478,11 @@ async function confirmDeleteModal(payload: { reason?: string }) {
     return
   }
 
+  if (action.kind === 'purge-node') {
+    await purgeNodeById(action.nodeId)
+    return
+  }
+
   const reason = payload.reason?.trim()
   if (!reason) {
     return
@@ -544,6 +560,17 @@ async function deleteNodeById(nodeId: string) {
   }
 }
 
+async function purgeNodeById(nodeId: string) {
+  try {
+    await purgeNode(nodeId)
+    // 该节点的本地缓存包括聊天消息，一起从前端状态里清掉。
+    messages.value = messages.value.filter((message) => message.from_id !== nodeId)
+    await removeNodeFromLocalState(nodeId)
+  } catch (err) {
+    error.value = err instanceof Error ? err.message : String(err)
+  }
+}
+
 async function deleteAndBlockNode(payload: NodeActionPayload) {
   try {
     if (payload.message) {
@@ -737,6 +764,7 @@ onBeforeUnmount(() => {
           @select-node="selectNode"
           @clear-node="clearSelectedNode"
           @delete-node="requestDeleteNode"
+          @purge-node="requestPurgeNode"
           @delete-and-block-node="requestDeleteAndBlockNode"
         />
       </section>
@@ -753,6 +781,7 @@ onBeforeUnmount(() => {
         @select-node="selectNode"
         @page-change="loadNodePage"
         @delete-node="requestDeleteNode"
+        @purge-node="requestPurgeNode"
         @delete-and-block-node="requestDeleteAndBlockNode"
       />
     </template>
diff --git a/meshmap_frontend/src/api.ts b/meshmap_frontend/src/api.ts
index bcadf37..24cb3de 100644
--- a/meshmap_frontend/src/api.ts
+++ b/meshmap_frontend/src/api.ts
@@ -211,6 +211,11 @@ export function deleteNode(nodeId: string): Promise<{ status: string }> {
   return deleteJSON<{ status: string }>(`/api/admin/nodes/${encodeURIComponent(nodeId)}`)
 }
 
+// 「删除节点」：除节点信息和地图上报外，再清理聊天消息以及 position/telemetry/routing/traceroute 等数据包记录。
+export function purgeNode(nodeId: string): Promise<{ status: string }> {
+  return deleteJSON<{ status: string }>(`/api/admin/nodes/${encodeURIComponent(nodeId)}/purge`)
+}
+
 export function getPositions(limit = 500, offset = 0, nodeIdOrOptions: string | ListQueryOptions = ''): Promise<ListResponse<PositionRecord>> {
   return getJSON<ListResponse<PositionRecord>>(listPath('/api/positions', limit, offset, nodeIdOrOptions))
 }
diff --git a/meshmap_frontend/src/components/MeshMap.vue b/meshmap_frontend/src/components/MeshMap.vue
index f271343..1e90d59 100644
--- a/meshmap_frontend/src/components/MeshMap.vue
+++ b/meshmap_frontend/src/components/MeshMap.vue
@@ -24,6 +24,7 @@ const emit = defineEmits<{
   'select-node': [nodeId: string]
   'clear-node': []
   'delete-node': [nodeId: string]
+  'purge-node': [nodeId: string]
   'delete-and-block-node': [payload: { nodeId: string; nodeNum: number | null }]
   'bounds-change': [payload: MapBoundsChangePayload]
   'map-source-change': [sourceId: number]
@@ -146,6 +147,13 @@ function deleteSelectedNode() {
   closeNodeMenu()
 }
 
+function purgeSelectedNode() {
+  if (menuNode.value) {
+    emit('purge-node', menuNode.value.node_id)
+  }
+  closeNodeMenu()
+}
+
 function deleteAndBlockSelectedNode() {
   if (menuNode.value) {
     emit('delete-and-block-node', {
@@ -590,6 +598,7 @@ function escapeHTML(value: string): string {
     >
       <a :href="nodeDetailHref(menuNode.node_id)">节点详细</a>
       <button v-if="isAdmin" class="danger" type="button" @click="deleteSelectedNode">删除</button>
+      <button v-if="isAdmin" class="danger" type="button" @click="purgeSelectedNode">删除节点</button>
       <button v-if="isAdmin" class="danger" type="button" @click="deleteAndBlockSelectedNode">删除并屏蔽节点</button>
     </div>
   </section>
diff --git a/meshmap_frontend/src/components/NodeListPanel.vue b/meshmap_frontend/src/components/NodeListPanel.vue
index fe4cbac..45a6a44 100644
--- a/meshmap_frontend/src/components/NodeListPanel.vue
+++ b/meshmap_frontend/src/components/NodeListPanel.vue
@@ -17,6 +17,7 @@ const emit = defineEmits<{
   'select-node': [nodeId: string]
   'page-change': [page: number]
   'delete-node': [nodeId: string]
+  'purge-node': [nodeId: string]
   'delete-and-block-node': [payload: { nodeId: string; nodeNum: number | null }]
 }>()
 
@@ -53,6 +54,13 @@ function deleteSelectedNode() {
   closeNodeMenu()
 }
 
+function purgeSelectedNode() {
+  if (menuNode.value) {
+    emit('purge-node', menuNode.value.node_id)
+  }
+  closeNodeMenu()
+}
+
 function deleteAndBlockSelectedNode() {
   if (menuNode.value) {
     emit('delete-and-block-node', { nodeId: menuNode.value.node_id, nodeNum: menuNode.value.node_num ?? null })
@@ -130,6 +138,7 @@ onBeforeUnmount(() => {
     >
       <a :href="nodeDetailHref(menuNode.node_id)">节点详细</a>
       <button v-if="isAdmin" class="danger" type="button" @click="deleteSelectedNode">删除</button>
+      <button v-if="isAdmin" class="danger" type="button" @click="purgeSelectedNode">删除节点</button>
       <button v-if="isAdmin" class="danger" type="button" @click="deleteAndBlockSelectedNode">删除并屏蔽节点</button>
     </div>