Children often catch colds, mainly related to poor resistance, cross-infection, allergies and their own underlying diseases. Parents need to take their children to the pediatrics department of a regular hospital in time for relevant examinations to diagnose the disease, identify the cause, and then treat the symptoms. Common causes 1, poor resistance: children’s immune system is not yet mature, poor living environment, lack of outdoor exercise, and partiality and other factors, resulting in the body’s ability to resist external germs weak, resulting in bacteria, viruses, easy to invade the cold after triggered; 2, cross-infection: children go to kindergarten, elementary school, and a large number of people of the same age to live together, which is constantly appearing in colds, resulting in the phenomenon of cross-infection appear often cold Allergy: if children are allergic, they can be allergic to seasonal changes and food, etc. 4, underlying diseases: if children suffer from congenital heart disease, rickets, etc., colds are more likely to occur due to their own illnesses. Treatment 1, allergy factors: allergies cause children to often cold, need to go to the hospital in a timely manner for allergen screening, and avoid contact with allergens; 2, disease factors: disease factors, need to identify the cause of the disease, to take the symptomatic treatment of the primary disease, such as surgical treatment of congenital heart disease, through supplemental vitamin D and calcium treatment of rickets and so on. Precautions 1, parents also need to regularly take the child to the regular hospital, under the guidance of professional doctors to inject the flu vaccine. Influenza outbreak season should pay attention to the prevention of infection, you can reduce the chances of children out of the house, often open the windows to ventilate the home, go out wearing a mask to prevent influenza; 2, usually should be a regular diet, pay attention to the combination of meat and vegetables, to avoid overeating, like to eat sweet and greasy, such as bad eating habits, the need to eat small meals and eat more fresh fruits and vegetables as well as coarse grains, such as oranges, bananas, buckwheat, corn, and so on. Regular work and rest, avoid staying up late, increase the amount of children’s outdoor exercise, appropriate physical exercise, in order to enhance physical fitness.