在民事诉讼中 ,每一诉讼程序必须有两方当事人参加。但在特殊情况下 ,还可能有第三人参加。对此 ,祖国大陆民事诉讼法称之为第三人 ,台湾地区称之为主参加诉讼和诉讼参加。为增进两岸间法制的彼此了解 ,本文谨就祖国大陆民事诉讼法中的第三人制度与台湾地区民事诉讼法中的主参 In civil proceedings, there must be two parties to each proceeding. However, there may be third parties in exceptional circumstances. In this regard, the civil procedure law of the motherland mainland calls it the third person, and the Taiwan area calls it the Lord to participate in the lawsuit and litigation. In order to promote mutual understanding of the legal system between the two sides of the Taiwan Strait, this article, on the basis of the Third Person System in the Civil Procedure Law of the Mainland of China and the main parameters in the Civil Procedure Law of Taiwan