It is better to try not to take Qi Zhen San during acute urticaria in children at 4 weeks. Qi Zhen San is generally used for weak spleen and stomach, and it is also not a treatment for urticaria. If it is 4 weeks after birth, it belongs to the neonatal stage. The occurrence of acute urticaria is considered to be related to physical factors, infections, and medications, which can cause acute limited edema, leading to windy, erythematous patches on the skin, and the lesions are usually intensely itchy. During acute urticaria, avoid contact with sensitizing substances, stop taking suspected medications, seek prompt medical attention, and give appropriate medication under doctor’s supervision, such as topical application of glycerite lotion, which can relieve itching. If necessary, the child’s symptoms can be quickly relieved by intravenous administration. During the treatment of the disease, avoid taking all suspicious drugs, so do not give your baby seven precious powder to avoid the impact on the treatment of the disease. Breastfed babies, during the treatment of the disease, the mother avoids the intake of food that can easily trigger allergies, to avoid affecting the treatment of the disease.