It is one of the characteristics of urticaria that the rash rises and falls repeatedly. If the recurrence does not exceed six weeks, it is considered to be acute urticaria, and it is recommended to take oral levocetirizine tablets every night and add compound glycyrrhetinic acid tablets to help regulate the body and reduce the recurrence of urticaria. If it lasts longer than six weeks and the number of episodes is more than twice a week, it is considered chronic urticaria, which can be more difficult to treat. It is recommended to first improve the serum allergens, blood and urine routine, gastric Helicobacter pylori, thyroid function, thyroid ultrasound and other related examinations to rank the recurrent urticaria caused by systemic diseases.