diff --git a/extend/base/Page.php b/extend/base/Page.php
index 12e1fb3ec..c77b65f12 100755
--- a/extend/base/Page.php
+++ b/extend/base/Page.php
@@ -129,7 +129,7 @@ class Page
 		$this->html .= '</li>';
 
 		$this->html .= '<span class="am-margin-left-sm">每页</span>';
-		$this->html .= '<input type="text" min="1" class="am-form-field am-inline-block am-text-center am-margin-horizontal-xs am-radius pagination-input" value="'.$this->page_size.'" onchange="window.location.href=\''.$this->url.$this->page_join.'page_size=\'+(isNaN(parseInt(this.value)) ? 10 : parseInt(this.value) || 10);" onclick="this.select()" />';
+		$this->html .= '<input type="text" min="1" class="am-form-field am-inline-block am-text-center am-margin-horizontal-xs am-radius pagination-input" value="'.$this->page_size.'" onchange="window.location.href=\''.str_replace(['&page_size='.$this->page_size, 'page_size='.$this->page_size.'&'], '', $this->url).$this->page_join.'page_size=\'+(isNaN(parseInt(this.value)) ? 10 : parseInt(this.value) || 10);" onclick="this.select()" />';
 		$this->html .= '<span>条</span>';
 
 		$this->html .= '<span class="am-margin-left-sm">跳转到</span>';