The function of Wei Ling Xian is to dispel wind-dampness and open the meridians and channels, and it is mainly used for treating rheumatism and paralysis, numbness of limbs, contracture of tendons and veins (persistent tension and stiffness of muscles), and unfavorable flexion and extension. Wei Ling Xian is pungent and good at walking, warm and fluent in nature, with the function of dispelling wind-dampness, and has a good effect of clearing the channels and relieving pain (clearing the channels and relieving pain), and it is a commonly used drug in the treatment of rheumatism paralysis and pain. It is used for the pain of limbs caused by wind-dampness and the pain of foot, etc. It is often used with Qiangwu, Duhong, and Niu Knee. It is also used to treat gout, upper, middle and lower body pains, and wind pains of dampness, together with Qiangwu, Fangji and Nanxing. Wei Ling Xian can also be used to treat all bones and throat, can be decocted in water with Wei Ling Xian alone, or add rice vinegar decoction, several times in the mouth, swallow slowly. It should be noted that qi and blood deficiency and pregnant women should not take it. Wei Ling Xian needs to be used after identification by a TCM doctor, and often needs to be combined with other medicines in order to exert sufficient efficacy, so self-medication should be avoided.