To summarize and analyze Professor Bai Yanping' s clinical experience in treating alopecia areata. Prof. Bai thinks the etiology of alopecia areata is a combination of liver-kidney depletion, qi and blood deficiency, qi stagnation and blood stasis, always along with wind-heat, damp-heat, blood heat and insomnia. It is indispensable to enrich and nourish the liver and kidney, supplement and nourish the qi and blood, invigorate blood and dissolve stasis, and at the same time, the usage of messenger drug and plum-blossom needle is important and formula has to vary from person to person on the basis of commonality.