Alopecia areata is the phenomenon of hair loss, which has various causes. In Chinese medicine theory, the strength and weakness of the kidney essence in the body is mainly related to the level of hair growth and metabolism in the body. Kidney deficiency may cause the hair follicles not to be nourished, the hair lacks nutrition, and the hair follicles gradually shrink, which leads to hair loss. The main symptoms of alopecia are: oily hair, increased dandruff, itchy scalp, gradually thinning at the top of the head or the two forehead corners, and often accompanied by tinnitus, soreness and weakness of the waist and knees. Kidney qi and yin deficiency type of hair loss, can use the formula Zhi Bai Di Huang Wan combined with two to pill treatment; 2, kidney essence deficiency type of hair loss: mainly manifested as hair whitening or yellowing, no luster, but less dandruff, hair usually in small pieces of loss, can be accompanied by dizziness and tinnitus, irritability, insomnia and anxiety, waist and knee weakness and other symptoms, can use the Shou Xian bird ginseng wolfberry soup treatment. Daily life should pay attention to rest on time, avoid staying up late, maintain a positive and optimistic attitude. Also need to pay attention to reduce the number of perms, hair dyeing, diligent shampooing, keep the hair wet, gently comb the hair with a comb to prevent adverse stimulation to the hair and scalp.