diff --git a/web/problemset.php b/web/problemset.php
index a7335e9..09b100e 100644
--- a/web/problemset.php
+++ b/web/problemset.php
@@ -69,8 +69,8 @@ $acc_arr = array();
 if (isset($_SESSION[$OJ_NAME . '_' . 'user_id'])) {
 	$user_id = $_SESSION[$OJ_NAME . '_' . 'user_id'];
 	// 管理员可以选择看谁的对错信息
-	if (isset($_SESSION[$OJ_NAME . '_' . 'administrator']) && isset($_SESSION[$OJ_NAME . '_' . 'query_user_id'])) {
-		$user_id = $_SESSION[$OJ_NAME . '_' . 'query_user_id'];
+	if (isset($_SESSION[$OJ_NAME . '_' . 'administrator']) && isset($_GET[$OJ_NAME . '_' . 'query_user_id'])) {
+		$user_id = $_GET[$OJ_NAME . '_' . 'query_user_id'];
 	}
 	$sql = "SELECT problem_id, MIN(result) AS result FROM solution WHERE user_id=? and result>=4 GROUP BY problem_id ";
 	$result = pdo_query($sql, $_SESSION[$OJ_NAME . '_' . 'user_id']);