This paper focuses on the interpretation of the sections of Beiguan old style theater ‘LanFangTsao’ presented at “Liu Yu-Hsiu’s Graduate Concert”. Below is the synopsis of LanFangTsao: A wicked woman, LanFangTsao’s wife, abused their daughter-in-law, and accused things up that made the poor girl put in jail.After knowing the situation, LanFangTsao went to jail to see his daughter-in-law.

First of all, the paper will start with story research, comparing the scripts of LanFangTsao which is followed by the version of text description（總講）from master Peng, Shiou-Jing with Qing Menggu Chewangfu Changquben and the other beiguan text descriptions.

Furthermore, the paper will focus on the melo-metric tunes of Beiguan old style theater LanFangTsao used, including Pin Ban（平板）, Er Fan（二凡）, Man Zhong Jin（慢中緊）, Doa Ban（倒板）, Jin Ban（緊板）, analysing the characters' status and interpretation of the melo-metric tunes.