Allergic rashes caused by food in babies should be treated promptly by avoiding contact with the allergic substances, as well as with topical as well as oral medications. When the baby comes into contact with the food that causes his allergy, there will be obvious red rash, pimples or blister-like changes, and in severe cases, generalized edema may appear. Babies should be avoided from contacting allergic substances in time. In order to avoid the reappearance of allergic reactions from the root. Babies with food allergy symptoms need to go to the hospital in a timely manner, especially after the emergence of anaphylaxis, to immediately call 120 to the hospital to deal with. If only localized redness, swelling, blisters, oozing, you can first use 3% boric acid solution for wet compresses, can also be used externally with glycerine lotion and other drugs to relieve the symptoms. Severe itching can use cetirizine hydrochloride drops and other anti-allergy treatment. Baby food-induced allergic rashes, need to give targeted treatment according to the situation, the above drugs need to be used under the guidance of a doctor.