There are more reasons for children’s recurrent colds. First of all, children’s airways are shorter, and the fibrous epithelial cells of the nasal mucosa are fragile and richer in blood vessels, resulting in the respiratory tract being susceptible to pathogenic bacterial infections, which can also spread to the lower respiratory tract and appear corresponding to cold symptoms. In addition, recurrent colds in children are also related to cold, nutritional imbalance, chronic lesions, incomplete treatment and lack of exercise, etc. 1, cold: if stimulated by cold air, not adding clothes in time, so that children get cold will cause recurrent colds in children, according to the seasonal changes in time to add children’s clothes; 2, nutritional imbalance: malnourished children are more likely to have recurrent colds The children should have a balanced diet, eat more fresh vegetables and fruits containing vitamins and food containing high quality protein. Ensure adequate nutrition supply, pay attention to the intake of vitamin A and vitamin C. 3, chronic lesions: such as chronic pharyngitis, chronic tonsillitis, otitis media, etc., so that the mucosa of the respiratory tract is damaged by inflammation, which can lead to children prone to recurrent colds, should actively treat the original disease; 4, incomplete treatment: children’s colds are prone to combined bacterial infections, and need to be treated according to the course of treatment. If parents stop the medicine after the child’s fever has gone down or symptoms have improved and do not continue treatment, it will lead to incomplete elimination of inflammation and recurrence; 5. Lack of exercise: If children are not often active it will lead to weakness, a significant decline in fitness and susceptibility to colds. Therefore, parents need to take their children out more often to actively exercise and strengthen their resistance; 6. Re-infection: During the epidemic of cold, if children are taken to crowded public places, they will be exposed to infectious sources and become infected again, making it easy for children to have recurrent colds. When children have recurring colds, we should identify the cause in time, take the right treatment, parents should not blindly use drugs, so as not to delay the disease, causing further aggravation of the cold, causing delayed disease does not heal.