The treatment of acute urticaria in children includes eliminating the causes and treating the symptoms. 1. Eliminate the causes: Children with acute urticaria, common causes include food allergies, infections (viruses, bacteria, fungi, parasites, etc.), drugs (vaccines, antibiotics, etc.), skin contact with allergens, etc., need to eliminate the causes of the disease in a timely manner, including the avoidance of allergic foods, active control of infections, to stop the use of potentially allergic medications, to avoid contact with substances that may cause allergies. 2. Symptomatic treatment: Prefer the treatment of second-generation H1 receptor antagonists with less sedative effect, such as cetirizine and dicloretadine dry suspension. When a single antihistamine drug is ineffective, the antihistamine drug can be changed or combined with two antihistamine drugs. Patients with concomitant abdominal pain are given antispasmodic and analgesic drugs (brompropionyltargetine, atropine, etc.); those with sepsis or septicemia are given antibiotics (cephalosporins, penicillin, etc.) for anti-infective treatment; aminophylline can be used for bronchospasm. In severe cases, hormones such as dexamethasone can be given intravenously or intramuscularly. If the child has acute urticaria, it is recommended that parents take the child to the hospital in a timely manner, follow the doctor’s instructions for treatment, and medication should be used under the guidance of a professional doctor.