Children with poor immunity can easily lead to repeated colds, which can be enhanced through proper warmth, healthy diet, proper exercise, and improving the environment. 1. Keep warm: Parents should pay attention to the seasonal changes, especially in the seasonal changes, timely increase or decrease the child’s clothing, do a good job of keeping warm. However, you should not give your child too thick clothes, otherwise your child will sweat a lot after a little exercise, which will increase the risk of catching a cold. 2. Healthy diet: Parents should consciously help children develop good eating habits, eat more fresh fruits and vegetables, eat less cold and spicy food, to ensure that the nutrition is comprehensive and balanced. Children eat well, eat healthy, immunity naturally improve, physical fitness will also be enhanced. 3. Appropriate exercise: Parents should take their children to do some appropriate exercise in their free time, such as running. Develop a good exercise habit, to a certain extent, can also improve immunity, enhance physical fitness, reduce disease. 4. Improve the environment: keep the room clean and hygienic, but do not over-clean, over-cleaning and disinfection is also not conducive to the enhancement of the child’s immune system. If the child appears to have a cold all the time, you need to go to the hospital in time, under the guidance of the doctor for reasonable treatment, if necessary, medication.