2004年,日本对刑事诉讼法及刑事诉讼规则进行了二战后最大的修改,建立了新型的审前准备程序,增设了争点及证据整理程序,其中对于证据开示的程序作了详细规定。为了充实争点及证据整理程序,必然要扩充证据开示范围,因此新法对于证据开示制度中证据开示的时间、范围等均作了完整、详细的规定,同时,对应新型的审前准备程序, In 2004, Japan made the greatest revision to the Code of Criminal Procedure and Rules of Criminal Procedure after World War II, established a new type of pre-trial preparation procedure and added procedures for the issue of dispute and proof. Among them, the procedure for the discovery of evidence was elaborated. In order to enrich the procedure of dispute and evidence collation, it is bound to expand the range of evidence disclosure. Therefore, the new law provides complete and detailed provisions on the time and scope of the evidence disclosure in the evidence disclosure system. At the same time, it responds to the new pretrial preparation procedure ,