It is a frequent clinical symptom that the baby coughs instead of getting well from a cold, which is clinically known as post-cold cough, and some patients continue to cough for several weeks. It is important to control the diet and not to eat foods that are too easy to catch fire, as well as to keep the room ventilated and maintain proper humidity in the room. The cough is not caused by bacteria or viruses, so there is often no need to use anti-infective drugs. If the cough persists for more than 8 weeks after the cold, it is recommended to visit the hospital promptly to rule out allergic cough.