diff --git a/db/update18.4.beta1.sql b/db/update18.4.beta1.sql
new file mode 100644
index 0000000000..9f4584d725
--- /dev/null
+++ b/db/update18.4.beta1.sql
@@ -0,0 +1 @@
+INSERT INTO `zt_cron` (`m`, `h`, `dom`, `mon`, `dow`, `command`, `remark`, `type`, `buildin`, `status`) VALUES ('0','*','*','*','*','moduleName=misc&methodName=cleanCache', '清理缓存文件','zentao', 1, 'normal');
diff --git a/db/zentao.sql b/db/zentao.sql
index 945b0ebd8a..8dd9819e5d 100755
--- a/db/zentao.sql
+++ b/db/zentao.sql
@@ -2122,7 +2122,8 @@ INSERT INTO `zt_cron` (`m`, `h`, `dom`, `mon`, `dow`, `command`, `remark`, `type
 ('*/5',  '*',    '*',    '*',    '*',    'moduleName=ci&methodName=checkCompileStatus', '同步DevOps构建任务状态', 'zentao', 1, 'normal'),
 ('*/5',  '*',    '*',    '*',    '*',    'moduleName=ci&methodName=exec', '执行DevOps构建任务', 'zentao', 1, 'normal'),
 ('*/5',  '*',    '*',    '*',    '*',    'moduleName=mr&methodName=syncMR', '定时同步GitLab合并数据到禅道数据库', 'zentao', 1, 'normal'),
-('*/5',  '*',    '*',    '*',    '*',    'moduleName=compile&methodName=syncCompile', '定时同步构建记录', 'zentao', 1, 'normal');
+('*/5',  '*',    '*',    '*',    '*',    'moduleName=compile&methodName=syncCompile', '定时同步构建记录', 'zentao', 1, 'normal'),
+('0',    '*',    '*',    '*',    '*',    'moduleName=misc&methodName=cleanCache', '清理缓存文件',    'zentao', 1, 'normal');
 
 INSERT INTO `zt_group` (`vision`, `name`, `role`, `desc`) VALUES
 ('rnd', 'ADMIN', 'admin', 'for administrator'),
diff --git a/module/misc/control.php b/module/misc/control.php
index ceabc1ab7b..39d41daa2e 100644
--- a/module/misc/control.php
+++ b/module/misc/control.php
@@ -338,4 +338,23 @@ class misc extends control
         if(strpos(",$accounts,", $this->app->user->account) === false) $accounts .= ',' . $this->app->user->account;
         $this->loadModel('setting')->setItem('system.common.global.skip' . ucfirst($feature), $accounts);
     }
+
+    /**
+     * Clean cache files.
+     *
+     * @return void
+     */
+    public function cleanCache()
+    {
+        $cacheConfig = $this->config->cache;
+        if(!$cacheConfig->enable && !$cacheConfig->enableFullPage)
+        {
+            echo 'Cache is disabled.';
+            return;
+        }
+
+        $this->misc->getCacheFiles(rtrim($this->app->getCacheRoot(), DS));
+
+        echo 'Cleaned cache files.';
+    }
 }
diff --git a/module/misc/model.php b/module/misc/model.php
index 47405960ad..0258444862 100644
--- a/module/misc/model.php
+++ b/module/misc/model.php
@@ -134,4 +134,36 @@ class miscModel extends model
 
         return $weakSites;
     }
+
+    /**
+     * Get cache files.
+     *
+     * @param string $directory
+     * @return void
+     */
+    public function getCacheFiles($directory)
+    {
+        $files = glob($directory . DS . '*.cache');
+
+        foreach($files as $file) $this->readCacheFile($file);
+
+        $subdirectories = glob($directory . DS . '*', GLOB_ONLYDIR);
+
+        foreach($subdirectories as $subdirectory) $this->getCacheFiles($subdirectory);
+    }
+
+    /**
+     * Read cache file content, and delete it if expired.
+     *
+     * @param string $file
+     * @return bool
+     */
+    public function readCacheFile($file)
+    {
+        $content = file_get_contents($file);
+        $content = unserialize($content);
+
+        if(is_null($content['time'])) return false;
+        if(time() > $content['time']) return unlink($file);
+    }
 }