Children’s allergy face red and swollen is usually caused by contact dermatitis, to immediately away from the allergen, wash the contact area in a timely manner, under the guidance of the doctor to use anti-allergy drugs for treatment. Children’s face swelling due to allergies, need to immediately away from allergens, such as skin contact allergens, immediately wash with water, but should pay attention to avoid scratching stimulation. In addition, it is necessary to consult a doctor in time, under the guidance of the doctor for treatment, such as taking anti-allergy drugs such as loratadine, cetirizine and so on. Children have low resistance, try to eat less allergic food, or go to places with poor sanitation to avoid re-exposure to their allergic substances. When allergy occurs, parents should bring their children to the hospital in time, under the guidance of the doctor’s medication treatment, do not self-medication.