diff --git a/Bell/server/cmd/migrate/migration/version-local/2026082917001_bell_minimal_menu.go b/Bell/server/cmd/migrate/migration/version-local/2026082917001_bell_minimal_menu.go
new file mode 100644
index 0000000..9f910c4
--- /dev/null
+++ b/Bell/server/cmd/migrate/migration/version-local/2026082917001_bell_minimal_menu.go
@@ -0,0 +1,52 @@
+package version_local
+
+import (
+	"runtime"
+
+	"gorm.io/gorm"
+
+	"go-admin/cmd/migrate/migration"
+	common "go-admin/common/models"
+)
+
+func init() {
+	_, fileName, _, _ := runtime.Caller(0)
+	migration.Migrate.SetVersion(migration.GetFilename(fileName), migrateBellMinimalMenu)
+}
+
+func migrateBellMinimalMenu(db *gorm.DB, version string) error {
+	return db.Transaction(func(tx *gorm.DB) error {
+		if err := ApplyBellMinimalMenuVisibility(tx); err != nil {
+			return err
+		}
+		return tx.Create(&common.Migration{Version: version}).Error
+	})
+}
+
+// ApplyBellMinimalMenuVisibility keeps the imported GoAdmin menu records for
+// rollback and upgrades, but exposes only Bell product entries and the three
+// RBAC administration pages required to maintain local accounts.
+func ApplyBellMinimalMenuVisibility(tx *gorm.DB) error {
+	if err := tx.Exec(`
+		UPDATE sys_menu
+		SET visible = '1', updated_at = now()
+		WHERE menu_type IN ('M', 'C')
+		  AND deleted_at IS NULL
+		  AND visible IS DISTINCT FROM '1'
+	`).Error; err != nil {
+		return err
+	}
+
+	return tx.Exec(`
+		UPDATE sys_menu
+		SET visible = '0', updated_at = now()
+		WHERE menu_type IN ('M', 'C')
+		  AND deleted_at IS NULL
+		  AND (
+			path IN ('/admin', '/admin/sys-user', '/admin/sys-menu', '/admin/sys-role', '/bell')
+			OR permission IN ('admin:sysUser:list', 'admin:sysMenu:list', 'admin:sysRole:list',
+			                  'bell:alert:list', 'bell:event:list', 'bell:rule:list')
+		  )
+		  AND visible IS DISTINCT FROM '0'
+	`).Error
+}
diff --git a/Bell/server/tests/bell_minimal_menu/minimal_menu_test.go b/Bell/server/tests/bell_minimal_menu/minimal_menu_test.go
new file mode 100644
index 0000000..b7f7264
--- /dev/null
+++ b/Bell/server/tests/bell_minimal_menu/minimal_menu_test.go
@@ -0,0 +1,120 @@
+package bell_minimal_menu_test
+
+import (
+	"os"
+	"reflect"
+	"sort"
+	"testing"
+
+	"gorm.io/driver/postgres"
+	"gorm.io/gorm"
+
+	versionlocal "go-admin/cmd/migrate/migration/version-local"
+)
+
+var expectedVisibleMenus = []string{
+	"事件查询",
+	"用户管理",
+	"系统管理",
+	"菜单管理",
+	"角色管理",
+	"规则配置",
+	"预警中心",
+	"预警管理",
+}
+
+func TestBellMinimalMenuMigration(t *testing.T) {
+	databaseURL := os.Getenv("BELL_MINIMAL_MENU_TEST_DATABASE_URL")
+	if databaseURL == "" {
+		t.Skip("minimal menu database is not configured")
+	}
+	db, err := gorm.Open(postgres.Open(databaseURL), &gorm.Config{})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	assertVisibleMenus(t, db)
+	assertUnusedMenusRetainedAndHidden(t, db)
+	assertOperatorHasNoDefaultMenus(t, db)
+
+	var rowCountBefore int64
+	if err = db.Table("sys_menu").Count(&rowCountBefore).Error; err != nil {
+		t.Fatal(err)
+	}
+	if err = db.Exec(`UPDATE sys_menu SET visible = '0' WHERE title IN ('开发工具','定时任务','系统工具')`).Error; err != nil {
+		t.Fatal(err)
+	}
+	if err = db.Exec(`UPDATE sys_menu SET visible = '1' WHERE title IN ('系统管理','预警中心')`).Error; err != nil {
+		t.Fatal(err)
+	}
+	if err = db.Transaction(versionlocal.ApplyBellMinimalMenuVisibility); err != nil {
+		t.Fatal(err)
+	}
+	if err = db.Transaction(versionlocal.ApplyBellMinimalMenuVisibility); err != nil {
+		t.Fatalf("reapplying minimal menu policy failed: %v", err)
+	}
+	var rowCountAfter int64
+	if err = db.Table("sys_menu").Count(&rowCountAfter).Error; err != nil {
+		t.Fatal(err)
+	}
+	if rowCountAfter != rowCountBefore {
+		t.Fatalf("menu records changed during visibility migration: before=%d after=%d", rowCountBefore, rowCountAfter)
+	}
+	assertVisibleMenus(t, db)
+	assertUnusedMenusRetainedAndHidden(t, db)
+}
+
+func assertVisibleMenus(t *testing.T, db *gorm.DB) {
+	t.Helper()
+	var titles []string
+	if err := db.Table("sys_menu").
+		Where("menu_type IN ? AND deleted_at IS NULL AND visible = ?", []string{"M", "C"}, "0").
+		Order("title").Pluck("title", &titles).Error; err != nil {
+		t.Fatal(err)
+	}
+	sort.Strings(titles)
+	expected := append([]string(nil), expectedVisibleMenus...)
+	sort.Strings(expected)
+	if !reflect.DeepEqual(titles, expected) {
+		t.Fatalf("visible menu mismatch\nwant: %v\n got: %v", expected, titles)
+	}
+}
+
+func assertUnusedMenusRetainedAndHidden(t *testing.T, db *gorm.DB) {
+	t.Helper()
+	for _, title := range []string{"开发工具", "定时任务", "系统工具"} {
+		var values []string
+		if err := db.Table("sys_menu").Where("title = ? AND deleted_at IS NULL", title).Pluck("visible", &values).Error; err != nil {
+			t.Fatal(err)
+		}
+		if len(values) == 0 {
+			t.Fatalf("unused upstream menu %q was deleted", title)
+		}
+		for _, visible := range values {
+			if visible != "1" {
+				t.Fatalf("unused upstream menu %q remains visible=%q", title, visible)
+			}
+		}
+	}
+}
+
+func assertOperatorHasNoDefaultMenus(t *testing.T, db *gorm.DB) {
+	t.Helper()
+	var titles []string
+	err := db.Raw(`
+		SELECT DISTINCT m.title
+		FROM sys_role r
+		JOIN sys_role_menu rm ON rm.role_id = r.role_id
+		JOIN sys_menu m ON m.menu_id = rm.menu_id
+		WHERE r.role_key = 'operator'
+		  AND m.menu_type IN ('M', 'C')
+		  AND m.deleted_at IS NULL
+		  AND (m.path LIKE '/admin%' OR m.permission LIKE 'admin:%')
+	`).Scan(&titles).Error
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(titles) != 0 {
+		t.Fatalf("operator retains default administration menus: %v", titles)
+	}
+}
diff --git a/Bell/server/tests/bell_minimal_menu/run-postgres.ps1 b/Bell/server/tests/bell_minimal_menu/run-postgres.ps1
new file mode 100644
index 0000000..472e9e4
--- /dev/null
+++ b/Bell/server/tests/bell_minimal_menu/run-postgres.ps1
@@ -0,0 +1,79 @@
+[CmdletBinding()]
+param([string]$PostgresBin = 'D:\pgsql17\bin')
+
+Set-StrictMode -Version 3.0
+$ErrorActionPreference = 'Stop'
+$started = $false
+$root = Join-Path ([IO.Path]::GetTempPath()) ('yovision-bell-140-' + [guid]::NewGuid().ToString('N'))
+$data = Join-Path $root 'postgres'
+$log = Join-Path $root 'postgres.log'
+$serverRoot = (Resolve-Path (Join-Path $PSScriptRoot '..\..')).Path
+
+function Get-FreePort {
+    $listener = [Net.Sockets.TcpListener]::new([Net.IPAddress]::Loopback, 0)
+    try {
+        $listener.Start()
+        return ([Net.IPEndPoint]$listener.LocalEndpoint).Port
+    } finally {
+        $listener.Stop()
+    }
+}
+
+function Wait-ForPort([int]$Port) {
+    for ($attempt = 0; $attempt -lt 120; $attempt++) {
+        try {
+            $client = [Net.Sockets.TcpClient]::new()
+            $connected = $client.ConnectAsync('127.0.0.1', $Port).Wait(250) -and $client.Connected
+            $client.Dispose()
+            if ($connected) { return }
+        } catch {
+        }
+        Start-Sleep -Milliseconds 250
+    }
+    throw 'PostgreSQL did not start'
+}
+
+New-Item -ItemType Directory -Path $root | Out-Null
+$port = Get-FreePort
+try {
+    foreach ($name in @('initdb.exe', 'pg_ctl.exe', 'createdb.exe')) {
+        if (-not (Test-Path -LiteralPath (Join-Path $PostgresBin $name))) { throw "Missing $name" }
+    }
+    & (Join-Path $PostgresBin 'initdb.exe') -D $data -U postgres -A trust --encoding=UTF8 --no-locale | Out-Null
+    if ($LASTEXITCODE -ne 0) { throw 'initdb failed' }
+    $arguments = "-D `"$data`" -l `"$log`" -o `"-p $port -h 127.0.0.1`" start"
+    Start-Process (Join-Path $PostgresBin 'pg_ctl.exe') -ArgumentList $arguments -WindowStyle Hidden | Out-Null
+    Wait-ForPort $port
+    $started = $true
+    & (Join-Path $PostgresBin 'createdb.exe') -h 127.0.0.1 -p $port -U postgres bell_140
+    if ($LASTEXITCODE -ne 0) { throw 'createdb failed' }
+
+    $env:GOTOOLCHAIN = 'go1.26.5'
+    $env:BELL_DATABASE_URL = "host=127.0.0.1 port=$port user=postgres dbname=bell_140 sslmode=disable"
+    $env:BELL_MINIMAL_MENU_TEST_DATABASE_URL = $env:BELL_DATABASE_URL
+    $env:BELL_JWT_SECRET = [guid]::NewGuid().ToString('N') + [guid]::NewGuid().ToString('N')
+    $env:BELL_BOOTSTRAP_USERNAME = 'bell_140_admin'
+    $env:BELL_BOOTSTRAP_PASSWORD = [guid]::NewGuid().ToString('N')
+    $env:BELL_HOST = '127.0.0.1'
+    $env:BELL_PORT = (Get-FreePort).ToString()
+
+    Push-Location $serverRoot
+    try {
+        go run . migrate -c config/settings.yml *> (Join-Path $root 'migrate.log')
+        if ($LASTEXITCODE -ne 0) { throw "migration failed; evidence: $root" }
+        go test ./tests/bell_minimal_menu -count=1 -v
+        if ($LASTEXITCODE -ne 0) { throw 'minimal menu test failed' }
+        go run . migrate -c config/settings.yml *> (Join-Path $root 'migrate-repeat.log')
+        if ($LASTEXITCODE -ne 0) { throw "repeat migration failed; evidence: $root" }
+    } finally {
+        Pop-Location
+    }
+    Write-Output 'BELL_140_MINIMAL_MENU fresh=true upgrade=true repeat=true admin_whitelist=true operator_default_menu=false'
+} finally {
+    if ($started) {
+        & (Join-Path $PostgresBin 'pg_ctl.exe') -D $data -m fast stop *> (Join-Path $root 'stop.log')
+    }
+    foreach ($name in @('BELL_DATABASE_URL', 'BELL_MINIMAL_MENU_TEST_DATABASE_URL', 'BELL_JWT_SECRET', 'BELL_BOOTSTRAP_USERNAME', 'BELL_BOOTSTRAP_PASSWORD', 'BELL_HOST', 'BELL_PORT')) {
+        Remove-Item "Env:$name" -ErrorAction SilentlyContinue
+    }
+}