Miao medicine is a traditional medicine passed down from generation to generation by the Miao people. It is based on the "Three Roots Theory" against the background of ancient Chongshan culture and Wuling culture, and the three qi of heaven, earth and man are synchronized. Miao medicine believes that poison, deficiency, injury, accumulation, bacteria and insects are the six factors that cause human illness, referred to as "six causes". And the six causes must ultimately produce toxicity to cause human illness, so Miao medicine has always said that "no poison, no illness". Such as wind poison, cold poison, fire poison, gas poison, water poison, salt poison, etc. The Miao medicine Zuanjiefeng formula is specifically for the symptoms of muscle and bone pain, waist and leg pain, sciatica, drilling wind, wind poison itching, bruises, fractures, shoulder wind, soreness and weakness of muscles and bones caused by wind poison and cold poison. It is a national traditional medicine in the treasure house of Miao medicine. Miao medicine Zuanjiefeng therapy is one of the Miao medicine therapies, and the main medicine used is the root of Bignoniaceae plant Bignoniaceae. Bignonia is a deciduous woody vine with yellow-brown stems, aerial roots, odd-pinnate compound leaves, opposite, small leaves, sparse large-topped panicles, reddish-yellow corolla, flowering period from July to September, and yellow or yellow-red root surface with longitudinal cracks. It has the functions of annealing, detoxification, complement, pain relief, tendon relaxation and bone strengthening, and tendon and muscle strengthening. It is mainly used to treat tendon and bone pain, waist and leg pain, limb numbness, traumatic injuries, fractures, sciatica, sciatica, shoulder wind, wind poison itching, women's menstrual disorders, soreness and weakness of tendons and bones, etc. There are 8.901 million Miao people in China (data from the fifth national census in 2000), mainly distributed in Guizhou, Hunan, and Xiangxi Tujia and Miao Autonomous Prefecture. The application of Miao medicine is mainly among the Miao people, and the surrounding Tujia, Zhuang, Dong, Yao, Han and other ethnic groups also exchange and cross-application. Miao medicine sciatica therapy has been promoted nationwide as a suitable technology for rural medical and health care because of its convenient application and good efficacy.