There are 33 concoction formulae in the book ”Correction of errors in medical classics”, they can be divided in 2 categories: The first one is mainly for blood silt or stasis chasing, like ”Tong-qiao-huo-xie-tang”, ”hui-yan-zhu-yu-tang”, ”Xie-fu-zhu-yu-tang”, ”Ge-xia-zhu-yu-tang”, ”shao-fu-zhu-yu-tang”, ”Ton-jing-zhu-yu-tang”, ”Shen-tong-zhu-yu-tang”, etc. The other one is for qi tonifying, like ”Bu-yang-huan-wu-tang”, ”Huang-qi-chi-feng-tang”, ”Huang-qi-fang-feng-tang”, ”Huang-qi-gan-cao-tang”, ”Huang-qi-tao-ren-tang”, ”Jiu-ji-hui-yang-tang”, etc. This article will discuss the prescribing techniques of the author and his unique theories and experiences in the book ”Yi-lin-gai-cuo” (”Correction of errors in medical classics”).