The causes of itchy skin are diverse, including dry skin, eczema, psoriasis, etc. It is necessary to clarify the cause of the disease and then choose hormonal and local anesthetic drugs to stop itching. 1. When the skin is too dry, it will lead to the obstacle of the skin barrier, prone to itching, need to reduce the number of baths, pay attention to moisturizing, choose salicylic acid ointment and other drugs to stop itching. 2. Itchy skin caused by eczema, psoriasis, can be used externally with glycerine lotion, capsaicin and other drugs to reduce skin irritation and itching sensation, or externally with tacrolimus ointment, hydrocortisone ointment, dexamethasone ointment, lidocaine cream and other medications to resist itching. However, it is fundamentally necessary to go to the hospital in time to clarify the cause of the disease and treat the cause. The use of drugs should be under the guidance of professional medical personnel.