刑诉法和民诉法用专条专项明确界定了“当事人”的含义。在司法实践中,公安机关的司法文书,对当事人都以“犯罪嫌疑人”称之;人民检查院和人民法院的文书中则对当事人以“被告人”或者“原告”、“被告”称谓。但是近年来,随着诉讼法的修改,人民检察院不起诉决定书和人民法院二审刑事和民事判决书中,对当事人的称谓出现了混乱。 Criminal Procedure Law and Civil Procedure Law clearly define the meaning of “client ”. In judicial practice, the judicial instruments of the public security organs call the parties “criminals”; in the instruments of the People’s Procuratorate and the People’s Court, the parties concerned use the “defendant” or “plaintiff” , “Defendant ” title. However, in recent years, with the revision of the procedural law, the people’s procuratorate’s decision of non-prosecution and the criminal and civil verdict of the second instance of the people’s court have caused confusion on the appellations of the parties.