Abstract:A Complete Collection of Lyrics in Jin and Yuan Dynasties is a hug work which collects lyrics of the two dynasties. The 2000-year edition of Zhonghua Book Company has the appendix of corrections which can be used to correct mistakes and make complements. However, due to the fact that the work is the fruit of more than one author, there are inevitably some mistakes, which have become obstacles for the people's use. This paper has taken the latest fruits as reference, and has corrected mistakes found in the appendix from four parts: punctuation mistakes, wrong or wrongly simplified characters, failure to record or wrong pronunciation and supplementary words