Urticaria recurs after getting well for several reasons: i. Repeated exposure to allergic substances, such as inhalation of dust mites, powder mites, dust, and animal fur, or caused by the consumption of large amounts of foreign proteins. Second, due to certain foci of infection, including bacteria, viruses, fungi, such as suffering from gastric disease infected with Helicobacter pylori leading to the recurrence of urticaria. Third, suffering from serious medical diseases, such as diabetes, renal failure, etc. caused by the relapse. In clinical treatment, the occurrence of such cases need to maintain an adequate amount of anti-allergy drug therapy, such as oral levocetirizine hydrochloride oral solution or epinastine hydrochloride capsules, if necessary, can be combined with compound glycopyrrolate capsules oral.