Infectious urticaria usually refers to urticaria caused by various bacterial, fungal, viral, and parasitic infections, and belongs to the common type of acute urticaria, which is usually more serious, and even anaphylactic shock and so on. Before the appearance of infectious urticaria patients, there are usually signs of infection, followed by the typical erythema, wind, and other skin damage, mostly accompanied by itching, nausea, vomiting, abdominal pain, chest tightness, fever and other symptoms. However, some patients have more serious conditions, and even anaphylactic shock may occur, seriously jeopardizing patients’ lives and health. Therefore, after the occurrence of infectious urticaria, patients should actively cooperate with the doctor to take antihistamines such as loratadine, cetirizine, etc., and also need to follow the doctor’s instructions to give anti-infective drugs, such as cefixime, ganciclovir, itraconazole, albendazole, etc., but the above drugs are prohibited for those who are allergic to them. If necessary, immediately sent to the hospital for treatment to avoid delays. When the patient occurs infectious urticaria, it is recommended to timely hospital consultation, and actively cooperate with the doctor for anti-allergy and anti-infection treatment.