The self-healing time of viral colds in babies is related to the severity of the disease and individual circumstances, and cannot be generalized. Most viral colds in children are caused by infections such as parainfluenza virus and rhinovirus, which are transmitted through the respiratory tract and are highly contagious. If the symptoms are mild after infection, most children will gradually relieve themselves after 3-5 days by drinking more water, paying attention to rest and regulating their dietary habits. However, if the child’s immune system is low and the symptoms of the cold are severe, the recovery time may be longer. In addition, if the symptoms are further aggravated and combined with pneumonia, myocarditis and other diseases, it will cause great pain to the child and the recovery time will be longer. Therefore, if the fever does not subside for 3 days or if the baby has poor mental health, frequent coughing and difficulty in breathing, he/she needs to go to the pediatric department of the hospital in time to have C-reactive protein and blood tests to check whether there are other infections in addition to viral infections. Parents should pay close attention to the child’s condition and visit the pediatric department of the hospital if necessary. Pay attention to rest, eat a reasonable diet, add more protein and avoid spicy and stimulating food.