diff --git a/apps/daxpay-admin/src/locales/langs/en-US/system/security/session-management.json b/apps/daxpay-admin/src/locales/langs/en-US/system/security/session-management.json
index eea1feaec..d41b1da7c 100644
--- a/apps/daxpay-admin/src/locales/langs/en-US/system/security/session-management.json
+++ b/apps/daxpay-admin/src/locales/langs/en-US/system/security/session-management.json
@@ -5,6 +5,7 @@
     "enabled": "Control enabled",
     "disabled": "Control disabled",
     "online": "Online {hours} hours",
+    "active": "Active {hours} hours",
     "concurrent": "Concurrent {count} sessions",
     "strategy": "Strategy {name}"
   },
@@ -22,6 +23,11 @@
     "desc": "Maximum continuous online time per session.",
     "placeholder": "Enter max online duration"
   },
+  "activeTimeoutHours": {
+    "label": "Max Active Duration",
+    "desc": "Auto expires after inactivity, 0 means no limit.",
+    "placeholder": "Enter max active duration"
+  },
   "maxConcurrentSessions": {
     "label": "Max Concurrent Sessions",
     "desc": "Maximum concurrent sessions per account.",
diff --git a/apps/daxpay-admin/src/locales/langs/zh-CN/system/security/session-management.json b/apps/daxpay-admin/src/locales/langs/zh-CN/system/security/session-management.json
index df0a64257..04618e0fd 100644
--- a/apps/daxpay-admin/src/locales/langs/zh-CN/system/security/session-management.json
+++ b/apps/daxpay-admin/src/locales/langs/zh-CN/system/security/session-management.json
@@ -5,6 +5,7 @@
     "enabled": "控制已启用",
     "disabled": "控制未启用",
     "online": "在线 {hours} 小时",
+    "active": "活跃 {hours} 小时",
     "concurrent": "并发 {count} 个",
     "strategy": "策略 {name}"
   },
@@ -22,6 +23,11 @@
     "desc": "单次会话允许连续在线的最长时间。",
     "placeholder": "请输入最大在线时长"
   },
+  "activeTimeoutHours": {
+    "label": "最大活跃时长",
+    "desc": "无操作多久后自动失效，0表示不限制。",
+    "placeholder": "请输入最大活跃时长"
+  },
   "maxConcurrentSessions": {
     "label": "最大并发会话数",
     "desc": "单个账号允许同时在线的会话上限。",
diff --git a/apps/daxpay-admin/src/views/system/config/security/components/SessionManagement.vue b/apps/daxpay-admin/src/views/system/config/security/components/SessionManagement.vue
index 15a7784f2..bd185ffae 100644
--- a/apps/daxpay-admin/src/views/system/config/security/components/SessionManagement.vue
+++ b/apps/daxpay-admin/src/views/system/config/security/components/SessionManagement.vue
@@ -40,6 +40,8 @@
         : $t('system.security.session-management.summary.disabled'),
       // 在线时长
       $t('system.security.session-management.summary.online', { hours: formState.value.maxOnlineHours ?? 0 }),
+      // 活跃时长
+      $t('system.security.session-management.summary.active', { hours: formState.value.activeTimeoutHours ?? 0 }),
       // 并发数量
       $t('system.security.session-management.summary.concurrent', {
         count: formState.value.maxConcurrentSessions ?? 0,
@@ -189,6 +191,32 @@
               </div>
             </div>
 
+            <div class="config-item config-item--block">
+              <div class="config-item__main">
+                <!-- 最大活跃时长标签 -->
+                <div class="config-item__label">{{
+                  $t('system.security.session-management.activeTimeoutHours.label')
+                }}</div>
+                <!-- 最大活跃时长描述 -->
+                <div class="config-item__desc">{{
+                  $t('system.security.session-management.activeTimeoutHours.desc')
+                }}</div>
+              </div>
+              <div class="number-field">
+                <!-- 国际化：请输入最大活跃时长 -->
+                <a-input-number
+                  v-model:value="formState.activeTimeoutHours"
+                  :min="0"
+                  :max="720"
+                  :placeholder="$t('system.security.session-management.activeTimeoutHours.placeholder')"
+                  :disabled="!isEditing"
+                  style="width: 180px"
+                />
+                <!-- 单位：小时 -->
+                <span class="number-field__suffix">{{ $t('system.security.common.unit.hour') }}</span>
+              </div>
+            </div>
+
             <div class="config-item config-item--block">
               <div class="config-item__main">
                 <!-- 最大并发会话数标签 -->