diff --git a/library/think/Request.php b/library/think/Request.php
index 8a354633..45b65423 100644
--- a/library/think/Request.php
+++ b/library/think/Request.php
@@ -1486,6 +1486,12 @@ class Request
     public function cache($key, $expire = null)
     {
         if (false !== $key && $this->isGet() && !$this->isCheckCache) {
+            // 标记请求缓存检查
+            $this->isCheckCache = true;
+            if (false === $expire) {
+                // 关闭当前缓存
+                return;
+            }
             if ($key instanceof \Closure) {
                 $key = call_user_func_array($key, [$this]);
             } elseif (true === $key) {
@@ -1518,9 +1524,6 @@ class Request
                 $key = $fun($key);
             }
 
-            // 标记请求缓存检查
-            $this->isCheckCache = true;
-
             if (strtotime($this->server('HTTP_IF_MODIFIED_SINCE')) + $expire > $_SERVER['REQUEST_TIME']) {
                 // 读取缓存
                 $response = Response::create()->code(304);
diff --git a/library/think/Route.php b/library/think/Route.php
index 63cbe9c4..c8eb24e6 100644
--- a/library/think/Route.php
+++ b/library/think/Route.php
@@ -1491,7 +1491,7 @@ class Route
             $result = self::parseModule($route);
         }
         // 开启请求缓存
-        if ($request->isGet() && !empty($option['cache'])) {
+        if ($request->isGet() && isset($option['cache'])) {
             $cache = $option['cache'];
             if (is_array($cache)) {
                 list($key, $expire) = $cache;