Runny nose and sneezing in babies with cold can be self-healing in some mild cases, but in severe cases, they cannot heal themselves and need to be treated accordingly. When a baby sneezes and has a runny nose after being exposed to cold, upper respiratory tract infection is considered. If the symptoms are mild and the child has a strong constitution, he or she can gradually heal on his or her own within a week; in severe cases, the child may have fever and coughing sputum. Parents can take their children to the pediatric department of the hospital for relevant examination and symptomatic treatment. Children with cold and flu are self-limiting, but since their resistance and immunity are poorer than those of adults, they should pay attention to strengthening care, drink water several times in small amounts, open windows and ventilate regularly, eat light and easily digestible food, eat fresh vegetables and fruits appropriately, and pay attention not to take the affected children to public places to avoid cross-infection and aggravation of the disease.