传统的当事人制度以实体法为基础来判断当事人适格的基础,不能适应新型利益纷争的需要。实体法标准遭质疑和抛弃。而现在的适格当事人判断标准“诉的利益标准”也与实体法相关。但适格当事人的概念是与程序当事人的概念结合适用的,是实体与程序的统一,有其适用性。 The traditional party system based on the substantive law to judge the basis of the party's aptitude, can not meet the needs of the new type of interest disputes. Substantive law standards have been challenged and abandoned. And now the standard of judgment of competent parties “interest standard of prosecution ” also related to substantive law. However, the concept of a fit and proper party is applicable to the concept of a party as well as to the unification of the entity and the procedure and its applicability.