diff --git a/server/internal/handler/channel.go b/server/internal/handler/channel.go
index 937d64c..cb11147 100644
--- a/server/internal/handler/channel.go
+++ b/server/internal/handler/channel.go
@@ -152,6 +152,22 @@ func (h *ChannelHandler) Update(c *gin.Context) {
 	middleware.JSON(c, toChannelView(channel))
 }
 
+func (h *ChannelHandler) Delete(c *gin.Context) {
+	if !requireTenantAdmin(c) {
+		return
+	}
+	var channel model.Channel
+	if err := model.DB.Where("id = ? AND tenant_id = ?", c.Param("id"), middleware.GetTenantID(c)).First(&channel).Error; err != nil {
+		c.JSON(http.StatusNotFound, gin.H{"code": 404, "message": "渠道不存在"})
+		return
+	}
+	if err := model.DB.Delete(&channel).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"code": 500, "message": "删除失败"})
+		return
+	}
+	middleware.JSON(c, gin.H{"id": channel.ID, "deleted": true})
+}
+
 type createChannelReq struct {
 	Type       string `json:"type" binding:"required"`
 	Name       string `json:"name"`
diff --git a/server/internal/handler/export.go b/server/internal/handler/export.go
index a72f803..eca528c 100644
--- a/server/internal/handler/export.go
+++ b/server/internal/handler/export.go
@@ -145,7 +145,7 @@ func (h *SessionHandler) Export(c *gin.Context) {
 	channelMap := map[uint]model.Channel{}
 	if len(channelIDs) > 0 {
 		var channels []model.Channel
-		model.DB.Where("id IN ?", service.UniqueUint(channelIDs)).Find(&channels)
+		model.DB.Unscoped().Where("id IN ?", service.UniqueUint(channelIDs)).Find(&channels)
 		for _, ch := range channels {
 			channelMap[ch.ID] = ch
 		}
@@ -323,7 +323,7 @@ func (h *StatisticsHandler) Export(c *gin.Context) {
 
 	// 渠道
 	var channels []model.Channel
-	model.DB.Where("tenant_id = ?", tenantID).Find(&channels)
+	model.DB.Unscoped().Where("tenant_id = ?", tenantID).Find(&channels)
 	channelTypes := make(map[uint]string)
 	for _, channel := range channels {
 		channelTypes[channel.ID] = channel.Type
diff --git a/server/internal/handler/router.go b/server/internal/handler/router.go
index e491e6b..afae545 100644
--- a/server/internal/handler/router.go
+++ b/server/internal/handler/router.go
@@ -139,6 +139,7 @@ func SetupRoutes(r *gin.Engine, store storage.ObjectStorage, storageCfg config.S
 		channels.GET("", channel.List)
 		channels.POST("", middleware.RequirePermission("settings.channel"), channel.Create)
 		channels.PUT("/:id", middleware.RequirePermission("settings.channel"), channel.Update)
+		channels.DELETE("/:id", middleware.RequirePermission("settings.channel"), channel.Delete)
 
 		// 租户系统设置
 		settingsGroup := authRequired.Group("/settings")
diff --git a/server/internal/handler/security_integration_test.go b/server/internal/handler/security_integration_test.go
index 3383ae9..116a126 100644
--- a/server/internal/handler/security_integration_test.go
+++ b/server/internal/handler/security_integration_test.go
@@ -637,6 +637,67 @@ func TestChannelListAndToggleRequiresAdmin(t *testing.T) {
 	if err := model.DB.First(&updated, channel.ID).Error; err != nil || updated.Status != "disabled" {
 		t.Fatalf("渠道状态未更新: %+v err=%v", updated, err)
 	}
+
+	customer := model.Customer{TenantID: tenant.ID, Name: "历史渠道客户"}
+	if err := model.DB.Create(&customer).Error; err != nil {
+		t.Fatal(err)
+	}
+	session := model.Session{TenantID: tenant.ID, ChannelID: channel.ID, CustomerID: customer.ID, Status: "waiting"}
+	if err := model.DB.Create(&session).Error; err != nil {
+		t.Fatal(err)
+	}
+
+	denyDelete := httptest.NewRecorder()
+	router.ServeHTTP(denyDelete, bearerRequest(t, http.MethodDelete, fmt.Sprintf("/api/channels/%d", channel.ID), nil, agent))
+	if denyDelete.Code != http.StatusForbidden {
+		t.Fatalf("客服删除渠道应 403: %d %s", denyDelete.Code, denyDelete.Body.String())
+	}
+
+	deleteRecorder := httptest.NewRecorder()
+	router.ServeHTTP(deleteRecorder, bearerRequest(t, http.MethodDelete, fmt.Sprintf("/api/channels/%d", channel.ID), nil, admin))
+	if deleteRecorder.Code != http.StatusOK {
+		t.Fatalf("管理员删除渠道失败: %d %s", deleteRecorder.Code, deleteRecorder.Body.String())
+	}
+	var deleted model.Channel
+	if err := model.DB.Unscoped().First(&deleted, channel.ID).Error; err != nil || !deleted.DeletedAt.Valid {
+		t.Fatalf("渠道应软删除: %+v err=%v", deleted, err)
+	}
+
+	afterDelete := httptest.NewRecorder()
+	router.ServeHTTP(afterDelete, bearerRequest(t, http.MethodGet, "/api/channels", nil, admin))
+	var channelList struct {
+		Data []model.Channel `json:"data"`
+	}
+	if err := json.Unmarshal(afterDelete.Body.Bytes(), &channelList); err != nil {
+		t.Fatal(err)
+	}
+	if len(channelList.Data) != 0 {
+		t.Fatalf("已删除渠道不应出现在列表: %+v", channelList.Data)
+	}
+
+	historyRecorder := httptest.NewRecorder()
+	router.ServeHTTP(historyRecorder, bearerRequest(t, http.MethodGet, "/api/sessions?page=1&pageSize=10", nil, admin))
+	var history struct {
+		List []struct {
+			ID          uint   `json:"id"`
+			ChannelName string `json:"channel_name"`
+		} `json:"list"`
+	}
+	if err := json.Unmarshal(historyRecorder.Body.Bytes(), &history); err != nil {
+		t.Fatal(err)
+	}
+	if len(history.List) != 1 || history.List[0].ChannelName != "网页" {
+		t.Fatalf("历史会话应保留已删除渠道名称: %+v", history.List)
+	}
+
+	oldWidgetReq := httptest.NewRequest(http.MethodPost, "/api/widget/init",
+		bytes.NewBufferString(`{"channel_key":"WK_ch_001","page_url":"https://example.com/"}`))
+	oldWidgetReq.Header.Set("Content-Type", "application/json")
+	oldWidgetRecorder := httptest.NewRecorder()
+	router.ServeHTTP(oldWidgetRecorder, oldWidgetReq)
+	if oldWidgetRecorder.Code != http.StatusNotFound {
+		t.Fatalf("已删除渠道的旧嵌入代码应失效: %d %s", oldWidgetRecorder.Code, oldWidgetRecorder.Body.String())
+	}
 }
 
 func TestMultipleWebChannelsBindToDomains(t *testing.T) {
diff --git a/server/internal/handler/statistics.go b/server/internal/handler/statistics.go
index 85438b5..a844ddf 100644
--- a/server/internal/handler/statistics.go
+++ b/server/internal/handler/statistics.go
@@ -388,7 +388,7 @@ func (h *StatisticsHandler) ChannelDistribution(c *gin.Context) {
 		return
 	}
 	var channels []model.Channel
-	if err := model.DB.Where("tenant_id = ?", tenantID).Find(&channels).Error; err != nil {
+	if err := model.DB.Unscoped().Where("tenant_id = ?", tenantID).Find(&channels).Error; err != nil {
 		c.JSON(http.StatusInternalServerError, gin.H{"code": 500, "message": "查询渠道分布失败"})
 		return
 	}
diff --git a/server/internal/model/models.go b/server/internal/model/models.go
index 5c6528e..6115524 100644
--- a/server/internal/model/models.go
+++ b/server/internal/model/models.go
@@ -35,16 +35,17 @@ type User struct {
 }
 
 type Channel struct {
-	ID         uint      `gorm:"primaryKey" json:"id"`
-	TenantID   uint      `gorm:"index;not null" json:"tenant_id"`
-	Type       string    `gorm:"size:30;not null" json:"type"`
-	Name       string    `gorm:"size:50" json:"name"`
-	SiteDomain string    `gorm:"size:255" json:"site_domain"`
-	Status     string    `gorm:"size:20;default:enabled" json:"status"`
-	Config     string    `gorm:"type:text" json:"config"`
-	ScriptCode string    `gorm:"size:500" json:"script_code"`
-	CreatedAt  time.Time `json:"created_at"`
-	UpdatedAt  time.Time `json:"updated_at"`
+	ID         uint           `gorm:"primaryKey" json:"id"`
+	TenantID   uint           `gorm:"index;not null" json:"tenant_id"`
+	Type       string         `gorm:"size:30;not null" json:"type"`
+	Name       string         `gorm:"size:50" json:"name"`
+	SiteDomain string         `gorm:"size:255" json:"site_domain"`
+	Status     string         `gorm:"size:20;default:enabled" json:"status"`
+	Config     string         `gorm:"type:text" json:"config"`
+	ScriptCode string         `gorm:"size:500" json:"script_code"`
+	CreatedAt  time.Time      `json:"created_at"`
+	UpdatedAt  time.Time      `json:"updated_at"`
+	DeletedAt  gorm.DeletedAt `gorm:"index" json:"-"`
 }
 
 type Customer struct {
diff --git a/server/internal/service/session.go b/server/internal/service/session.go
index feb12da..7c5e153 100644
--- a/server/internal/service/session.go
+++ b/server/internal/service/session.go
@@ -202,7 +202,7 @@ func ListSessions(actor Actor, tenantID uint, f SessionFilter) ([]SessionListIte
 	channelMap := map[uint]model.Channel{}
 	if len(channelIDs) > 0 {
 		var channels []model.Channel
-		model.DB.Where("id IN ?", UniqueUint(channelIDs)).Find(&channels)
+		model.DB.Unscoped().Where("id IN ?", UniqueUint(channelIDs)).Find(&channels)
 		for _, ch := range channels {
 			channelMap[ch.ID] = ch
 		}
diff --git a/web/src/pages/agent/Settings.tsx b/web/src/pages/agent/Settings.tsx
index 4ca7f36..2bc9dd4 100644
--- a/web/src/pages/agent/Settings.tsx
+++ b/web/src/pages/agent/Settings.tsx
@@ -2,7 +2,7 @@ import { useEffect, useMemo, useState } from 'react'
 import { Button, Form, message } from 'antd'
 import { PlusOutlined } from '@ant-design/icons'
 import {
-  createChannel, createStaff, deleteStaff,
+  createChannel, createStaff, deleteChannel as deleteChannelApi, deleteStaff,
   getChannels, getCustomerTags, getStaff, getTenantSettings,
   updateChannel, updateStaff, updateTenantSettings,
   type Channel, type CustomerTag, type StaffUser, type TenantSettings, type WelcomeSegment,
@@ -288,6 +288,17 @@ const Settings = () => {
     }
   }
 
+  const handleDeleteChannel = async (channel: Channel) => {
+    try {
+      await deleteChannelApi(channel.id)
+      setChannels(previous => previous.filter(item => item.id !== channel.id))
+      message.success('渠道已删除，原嵌入代码立即失效')
+    } catch (e) {
+      message.error(e instanceof Error ? e.message : '删除失败')
+      throw e
+    }
+  }
+
   const addChannelType = async (t: string) => {
     try {
       await createChannel({ type: t, name: typeMeta[t].label })
@@ -410,6 +421,7 @@ const Settings = () => {
                 ensureWebChannel={addWebChannel}
                 addChannelType={addChannelType}
                 updateChannelMeta={updateChannelMeta}
+                deleteChannel={handleDeleteChannel}
               />
             )}
 
diff --git a/web/src/pages/agent/settings/ChannelsSection.tsx b/web/src/pages/agent/settings/ChannelsSection.tsx
index 85ff3a9..50a0b94 100644
--- a/web/src/pages/agent/settings/ChannelsSection.tsx
+++ b/web/src/pages/agent/settings/ChannelsSection.tsx
@@ -1,6 +1,6 @@
 import { useState } from 'react'
-import { Button, Empty, Form, Input, Modal, Spin, Switch, message } from 'antd'
-import { CopyOutlined, EditOutlined, LinkOutlined, PlusOutlined } from '@ant-design/icons'
+import { Button, Empty, Form, Input, Modal, Popconfirm, Spin, Switch, message } from 'antd'
+import { CopyOutlined, DeleteOutlined, EditOutlined, LinkOutlined, PlusOutlined } from '@ant-design/icons'
 import type { Channel } from '@/services/api'
 import { typeMeta } from './channelMeta'
 
@@ -27,6 +27,7 @@ interface ChannelsSectionProps {
   ensureWebChannel: () => void
   addChannelType: (t: string) => void
   updateChannelMeta: (id: number, data: { name?: string; site_domain?: string }) => Promise<void>
+  deleteChannel: (channel: Channel) => Promise<void>
 }
 
 /** 渠道管理：接入渠道列表与嵌入代码 */
@@ -39,6 +40,7 @@ const ChannelsSection = ({
   ensureWebChannel,
   addChannelType,
   updateChannelMeta,
+  deleteChannel,
 }: ChannelsSectionProps) => {
   const [form] = Form.useForm()
   const [editing, setEditing] = useState<Channel | null>(null)
@@ -108,12 +110,30 @@ const ChannelsSection = ({
                           {enabled ? '已启用' : '未启用'}
                         </span>
                       </div>
-                      <Switch
-                        checked={enabled}
-                        size="small"
-                        loading={togglingId === ch.id}
-                        onChange={v => toggleChannel(ch, v)}
-                      />
+                      <div className="flex items-center gap-2 shrink-0">
+                        <Switch
+                          checked={enabled}
+                          size="small"
+                          loading={togglingId === ch.id}
+                          onChange={v => toggleChannel(ch, v)}
+                        />
+                        <Popconfirm
+                          title={`删除「${ch.name || meta.label}」？`}
+                          description="删除后原渠道 Key 和嵌入代码立即失效，历史会话仍会保留。"
+                          okText="删除"
+                          cancelText="取消"
+                          okButtonProps={{ danger: true }}
+                          onConfirm={() => deleteChannel(ch)}
+                        >
+                          <Button
+                            type="text"
+                            size="small"
+                            danger
+                            icon={<DeleteOutlined />}
+                            title="删除渠道"
+                          />
+                        </Popconfirm>
+                      </div>
                     </div>
                     {ch.type === 'web' && (
                       <div className="flex items-center gap-2 text-xs mb-2">
diff --git a/web/src/services/api.ts b/web/src/services/api.ts
index 6cee609..8405498 100644
--- a/web/src/services/api.ts
+++ b/web/src/services/api.ts
@@ -579,6 +579,7 @@ export const importQuickReplies = (file: File, scope: QuickReplyScope, onConflic
 export const getChannels = () => get<Channel[]>('/channels')
 export const createChannel = (data: { type: string; name?: string; site_domain?: string }) => post<Channel>('/channels', data)
 export const updateChannel = (id: number, data: { name?: string; status?: string; site_domain?: string }) => put<Channel>(`/channels/${id}`, data)
+export const deleteChannel = (id: number) => del<{ id: number; deleted: boolean }>(`/channels/${id}`)
 
 // 坐席账号
 export interface StaffUser {