Alopecia areata, also known as alopecia areata, is a psychiatric-led, autoimmune related, non-scarring hair loss disease that can occur on any part of the body. The cause is not yet fully understood, but is thought to be related to genetics, mental and emotional stress, endocrine disorders, immune inflammation and other factors, and belongs to the category of polygenic diseases. For patients with widespread baldness or complete baldness or general baldness, it is advisable to wear a wig to reduce the psychological burden. 2. Local medication: Patients can follow the doctor’s prescription to use topical minoxidil solution, which can improve local blood circulation and promote hair growth, and new hair can be produced in 2-3 months. Prednisolone suspension or compound betamethasone injection can be used for intradermal injection. 3. Systemic medication: Cystine, calcium pantothenate and B vitamins can be taken orally to help hair growth, and other sedatives can be given to patients with mental tension and anxiety and insomnia. For rapid and widespread hair loss including alopecia areata and alopecia areata, oral prednisone can be used, and compound glycyrrhizic acid glycosides, total peony glycosides, blood nourishing and hair growth capsules, thin sesame tablets and he shouwu tablets can be used. 4.