When allergies occur in 2-year-old babies, oral loratadine or desloratadine can be given for skin urticaria or respiratory allergic reactions caused by allergic reactions. In addition to oral loratadine, oral montelukast sodium chewable tablets can be given at bedtime if wheezing is caused by allergies. Also, oral vitamin C or oral calcium gluconate can be given during allergy symptoms to facilitate the treatment of desensitization. When allergic reactions occur in children, it is important to get rid of the allergen and not to eat the allergic food for a short period of time to avoid repeated allergic reactions, which may lead to a decrease in the child’s physical condition. If there are allergic gases or allergic dusts including pollen, parents must avoid exposing their children to them repeatedly, which may lead to more and more severe allergic reactions.