鉴于当事人制度的重要性,各国民事诉讼法对于当事人制度均给予极大关注,只是关注的方式大相径庭。大陆法系国家往往发展出一套深刻成熟的当事人理论来指导实践操作,这与其一贯的法律传统和严谨的哲学思想密切相关。而英美法系国家尤其是美国,却更倾向于依司法实务之进展而不断修正既有的当事人学说并用之于实践。 In view of the importance of the system of parties, the civil procedural laws of all countries have given great attention to the system of parties, but the methods of concern are quite different. Civil law countries tend to develop a set of profound and mature client theory to guide practical operation, which is closely related to its consistent legal tradition and rigorous philosophical thinking. The Anglo-American legal system countries, especially the United States, are more inclined to constantly amend the existing doctrine of parties and put them into practice in accordance with the progress of judicial practice.