《录鬼簿》及《续编》中著录元杂剧作品时所注明的“次本” ,非如王国维所说为续写本 ,亦非孙楷第所说为“摩本” ,而是一个佛教术语 ,其本来意义是仅次于足本的略本 ,杂剧借来用为改编本。基于这种认识 ,本文对《东窗事犯》等作品的著作权问题重新进行了甄别 ,并提出 ,元杂剧存在一个原创与改编的关系问题。 “The book” and “sequel” recorded in the Yuan Dynasty Zaju works when the “second edition”, as Wang Guowei said that the copy of the book, nor Sun Kai said the “Mount”, and Is a Buddhist term, its original meaning is second only to the script, the drama borrowed from the adapted version. Based on this understanding, this paper has rediscovered the copyright issues such as the “East Window Dispute” and put forward that there is a relationship between original and adaptation in the Yuan drama.