Children’s respiratory system is weak, so they can easily develop a cough after a cold. In addition, allergies and foreign body irritation are not excluded and need to be identified and treated accordingly. First of all, upper respiratory tract infections are the most common cause of cough in children, who may also have a runny nose, sneezing and fever. However, if you have bad habits and do not take proper care of your cough, it may recur and you may get a cold or a post-cold cough again. Bronchitis and pneumonia are also causes of coughing, so if your child has a cough, he or she needs to see a doctor to find out if he or she has bronchitis or pneumonia and get the right treatment. In addition to upper respiratory tract infections, allergic diseases are another important cause of coughing in children. The main nature of this type of cough is a dry cough in the early stages, often accompanied by an irritating cough. It is seasonal and may get worse suddenly, sometimes when pollen or cold air is encountered, but is particularly effective with hormonal medications such as nebulizer. The cough can be relieved by going to the hospital, confirming the diagnosis through allergen testing, removing the child from the allergic environment, and using anti-allergy medication. Some children may have a foreign body, which is not clear, and the cough may recur. In short, if your child always coughs, the most important thing is to go to the doctor to clarify the cause and target the treatment in order to cure it.