Children with frequent colds and fevers may have a poor physical condition, or if they have congenital immunodeficiencies, they may also suffer from these conditions. If children often have infections and fever, it may be related to their own immunity and resistance is relatively low, in this case, if the child is cold or day and night temperature difference is large, can not resist viruses and bacteria, so it will often have a cold and fever. Another rare cause is congenital immunodeficiency in children, which may also lead to the above situation, you need to actively go to the hospital for relevant examinations, and cooperate with the doctor for active treatment. There may be other reasons for children to have frequent colds and fevers, so it is recommended that they go to the hospital in time for a complete examination to determine the cause of the illness, and then give targeted treatment or therapy under the guidance of the doctor.