The cause of hives in a two year old baby should be clarified to see under what circumstances the baby develops hives, whether it is due to wind and cold, or contact with pollen, or contact with animals, or after eating what kind of food or drinking what kind of drinks. After identifying the cause of the disease, let the baby avoid contact with allergens as much as possible. In general, if the symptoms are mild, you can carry out anti-allergy treatment, take cetirizine and loratadine under the guidance of a physician or pharmacist, let the baby rest well and eat light food. If the baby’s symptoms are more serious or the symptoms do not see relief, must go to the regular hospital, follow the doctor’s instructions for reasonable drug treatment. The best way to treat hives is to actively search for allergens and cut off the chance of contact with allergens, which is the key to treating hives.