Children’s immunity is low first of all from the daily habits of life to help children adjust to enhance immunity: first, according to the temperature of the weather to increase or reduce clothing, not with the will of adults to let children wear more, but easy to cause children colds. Second, in good weather, encourage and accompany the child to play outdoor sports, the intensity of exercise should not be too strong, but gradually increase, which will help the child to enhance physical fitness. Third, the diet should pay attention to the meat and vegetables, reasonable nutrition, to help children take a balanced intake of nutrition, not partial food, do not eat too much snacks or drinks. Fourth, during epidemics, such as hand, foot and mouth disease, influenza, etc., do not go to crowded or unventilated public places. If the child’s resistance or fitness still does not improve well through the above methods, it is recommended to take the child to the hospital for a detailed physical examination, according to the results of the doctor’s examination appropriate medication to improve resistance.