This article takes the main point of Prof MEI Guoqiang expanding usage of Gegen Qinlian Tang（ 葛根芩连汤

GGQLT） to understand how to make flexible use of classical prescription. This article discusses GGQLT under the guidance of the overall concept of perpetual motion about meridians and Zang-fu

with principal syndrome and pathogenesis for the purpose to develop using

modify flexibly and make various change

such as treatment to the running routes of the Yang-ming meridians and the according pathogenesis including gingivitis

trigeminal neuralgia

acne

headache

jaw with arthritis

symptom of nasopharyngeal carcinoma after chemoradiotherapy and so on. The method of using GGQLT is very clever. The clinical use of GGQLT makes larges of curative effect.