This article is the first part of the research onDuanfajiof Zhengzi-opera and Chaozhou-opera.It compares the edition of Shidetang,Shidiaoqingkunand Zhengzi opera regarding the plot,Guanmu,libretton and spoken parts,then indicates their similarities and differences.It points out that the edition ofShidiaoqingkunand Zhengzi-opera both stem from Shidetang.The edition of Zhengzi-opera reorganized from the edition of Qingyangqiang-opera system.It has close relationship withShidiaoqingkun.