The treatment of recurrent urticaria is as follows: 1. Search for the cause: including infections, food, drugs, other diseases, including autoimmune diseases, which require efforts to find the cause. Although the cause is difficult to find, one can keep a life diary to look for factors that trigger aggravation; 2. Adopt a step therapy: first apply an antihistamine, such as levocetirizine. If the condition is not under control, the patient can use two antihistamines. And when two antihistamines cannot be controlled, anti-inflammatory drugs, cyclosporine, glucocorticoids can be used. If urticaria recurs, efforts need to be made to find the cause or trigger, and antihistamines need to be applied consistently for a slightly longer period of time.