diff --git a/@rbv b/@rbv
index 3e4b5e06e..065eb8939 160000
--- a/@rbv
+++ b/@rbv
@@ -1 +1 @@
-Subproject commit 3e4b5e06e60615f158b71a68e1d52c805a52bf50
+Subproject commit 065eb8939801a5d3bf664fdcbf3470fe158fd4f7
diff --git a/src/main/resources/web/admin/robot/trigger-design.html b/src/main/resources/web/admin/robot/trigger-design.html
index e6bd69548..8e0807e9e 100644
--- a/src/main/resources/web/admin/robot/trigger-design.html
+++ b/src/main/resources/web/admin/robot/trigger-design.html
@@ -100,17 +100,24 @@
                                   <option value="D">[[${bundle.L('每天')}]]</option>
                                   <option value="H">[[${bundle.L('每小时')}]]</option>
                                   <option value="M">[[${bundle.L('每月')}]]</option>
+                                  <option value="cron">[[${bundle.L('表达式')}]]</option>
                                 </select>
-                                <span>[[${bundle.L('执行')}]]</span>
-                                <input type="text" class="J_whenTimer2" placeholder="1" />
-                                <span>[[${bundle.L('次')}]]</span>
-                                <span class="ml-2">[[${bundle.L('执行时段')}]]</span>
-                                <select class="J_startHour1"></select>
-                                <span>~</span>
-                                <select class="J_startHour2"></select>
-                                <span class="bosskey-show">
-                                  <span class="ml-2">[[${bundle.L('执行日期')}]] (LAB)</span>
-                                  <input type="text" class="J_whenTimer4 w-auto" placeholder="eg. 1,2,15,30" />
+                                <span class="J_timerSimple">
+                                  <span>[[${bundle.L('执行')}]]</span>
+                                  <input type="text" class="J_whenTimer2" placeholder="1" />
+                                  <span>[[${bundle.L('次')}]]</span>
+                                  <span class="ml-2">[[${bundle.L('执行时段')}]]</span>
+                                  <select class="J_startHour1"></select>
+                                  <span>~</span>
+                                  <select class="J_startHour2"></select>
+                                  <span class="bosskey-show">
+                                    <span class="ml-2">[[${bundle.L('执行日期')}]] (LAB)</span>
+                                    <input type="text" class="J_whenTimer4 w-auto" placeholder="eg. 1,2,15,30" />
+                                  </span>
+                                </span>
+                                <span class="J_timerCron hide">
+                                  <span>[[${bundle.L('CRON 表达式')}]]</span>
+                                  <input type="text" class="J_whenTimer9 text-bold" placeholder="0 0 * * * ?" value="0 0 * * * ?" style="width: 120px" />
                                 </span>
                               </div>
                               <p class="form-text">[[${bundle.L('具体执行时间将在你设定的周期内平均分布。例如每天执行 2 次，其执行时间为 00:00 和 12:00')}]]</p>
diff --git a/src/main/resources/web/assets/js/rb-components.js b/src/main/resources/web/assets/js/rb-components.js
index e3fe625e5..09604245f 100644
--- a/src/main/resources/web/assets/js/rb-components.js
+++ b/src/main/resources/web/assets/js/rb-components.js
@@ -473,14 +473,16 @@ class RbAlertBox extends React.Component {
     if (!icon) icon = type === 'success' ? 'check' : type === 'danger' ? 'close-circle-o' : 'info-outline'
 
     return (
-      <div className={`alert alert-icon alert-icon-border alert-dismissible alert-sm alert-${type} ${props.className || ''}`} ref={(c) => (this._element = c)}>
+      <div className={`alert alert-icon alert-icon-border alert-sm alert-${type} ${props.unclose ? '' : 'alert-dismissible'} ${props.className || ''}`} ref={(c) => (this._element = c)}>
         <div className="icon">
           <i className={`zmdi zmdi-${icon}`} />
         </div>
         <div className="message">
-          <a className="close" onClick={() => this._handleClose()} title={$L('关闭')} data-dismiss="alert">
-            <i className="zmdi zmdi-close" />
-          </a>
+          {props.unclose ? null : (
+            <a className="close" onClick={() => this._handleClose()} title={$L('关闭')} data-dismiss="alert">
+              <i className="zmdi zmdi-close" />
+            </a>
+          )}
           <div>{props.message || 'INMESSAGE'}</div>
         </div>
       </div>
diff --git a/src/main/resources/web/assets/js/trigger/trigger-design.js b/src/main/resources/web/assets/js/trigger/trigger-design.js
index 5240f7889..9fb18b38a 100644
--- a/src/main/resources/web/assets/js/trigger/trigger-design.js
+++ b/src/main/resources/web/assets/js/trigger/trigger-design.js
@@ -32,6 +32,21 @@ $(document).ready(() => {
     })
   $('.J_startHour2').val('23')
 
+  $('.J_whenTimer1').on('change', function (e) {
+    if (e.target.value === 'cron') {
+      $('.J_timerSimple').addClass('hide')
+      $('.J_timerCron').removeClass('hide')
+    } else {
+      $('.J_timerSimple').removeClass('hide')
+      $('.J_timerCron').addClass('hide')
+    }
+  })
+  function _buildWhenTimer() {
+    let wt = $('.J_whenTimer1').val() || 'D'
+    if (wt === 'cron') return wt + ':' + ($('.J_whenTimer9').val() || '0 0 * * * ?')
+    return wt + `:${$('.J_whenTimer2').val() || 1}:${$('.J_startHour1').val() || 0}:${$('.J_startHour2').val() || 23}:${$('.J_whenTimer4').val() || ''}`
+  }
+
   if (wpc.when > 0) {
     $([1, 2, 4, 16, 32, 64, 128, 256, 512, 1024, 2048]).each(function () {
       let mask = this
@@ -42,13 +57,17 @@ $(document).ready(() => {
           $('.on-timers').removeClass('hide')
           const wt = (wpc.whenTimer || 'D:1').split(':')
           $('.J_whenTimer1').val(wt[0])
-          $('.J_whenTimer2').val(wt[1])
-          // v2.9
-          if (wt[2]) $('.J_startHour1').val(wt[2])
-          if (wt[3]) $('.J_startHour2').val(wt[3])
-          // v3.8
-          if (wt[4]) $('.J_whenTimer4').val(wt[4]).parents('.bosskey-show').removeClass('bosskey-show')
-
+          // v4.0
+          if (wt[0] === 'cron') {
+            $('.J_whenTimer9').val(wt[1])
+          } else {
+            $('.J_whenTimer2').val(wt[1])
+            // v2.9
+            if (wt[2]) $('.J_startHour1').val(wt[2])
+            if (wt[3]) $('.J_startHour2').val(wt[3])
+            // v3.8
+            if (wt[4]) $('.J_whenTimer4').val(wt[4]).parents('.bosskey-show').removeClass('bosskey-show')
+          }
           $('.J_whenTimer1').trigger('change')
         }
       }
@@ -57,15 +76,15 @@ $(document).ready(() => {
 
   // 评估具体执行时间
   function evalTriggerTimes() {
-    const whenTimer = `${$('.J_whenTimer1').val() || 'D'}:${$('.J_whenTimer2').val() || 1}:${$('.J_startHour1').val() || 0}:${$('.J_startHour2').val() || 23}:${$('.J_whenTimer4').val() || ''}`
-    $.get(`/admin/robot/trigger/eval-trigger-times?whenTimer=${whenTimer}`, (res) => {
+    $.get(`/admin/robot/trigger/eval-trigger-times?whenTimer=${_buildWhenTimer()}`, (res) => {
       renderRbcomp(
         <RbAlertBox
+          unclose
           icon="time"
           message={
             <div>
               <span className="mr-1">{$L('预计执行时间 (最多显示近 9 次)')} : </span>
-              <code>{res.data.slice(0, 9).join(', ')}</code>
+              <code>{res.data.length > 0 ? res.data.slice(0, 9).join(', ') : $L('无')}</code>
             </div>
           }
         />,
@@ -143,8 +162,6 @@ $(document).ready(() => {
       return
     }
 
-    const whenTimer = `${$('.J_whenTimer1').val() || 'D'}:${$('.J_whenTimer2').val() || 1}:${$('.J_startHour1').val() || 0}:${$('.J_startHour2').val() || 23}:${$('.J_whenTimer4').val() || ''}`
-
     const content = contentComp.buildContent()
     if (content === false) return
 
@@ -152,7 +169,7 @@ $(document).ready(() => {
     if (window.whenApproveNodes) content.whenApproveNodes = window.whenApproveNodes
     const data = {
       when: when,
-      whenTimer: whenTimer,
+      whenTimer: _buildWhenTimer(),
       whenFilter: wpc.whenFilter || null,
       actionContent: content,
       metadata: {