Cough is one of the most common symptoms of upper respiratory tract infections. Morning cough can be caused by inflammation of pharyngitis, bronchitis, etc., or by the body’s allergy to certain substances. Coughing is a protective reflex of the body, and coughing has a protective effect on the body by removing foreign bodies and secretions from the respiratory tract. The symptoms of coughing are mainly caused by inflammation of the trachea, bronchi, throat or lungs, as well as by physical and chemical irritation of the body or infection by pathogens such as bacteria and viruses. Since many diseases can cause a cough, the doctor will need to take a detailed medical history and have the patient undergo a chest CT, pulmonary function, bronchoscopy and other tests to confirm what is causing the cough. Of course, the doctor will choose the appropriate tests according to the patient’s condition. Morning cough may be due to allergy to cold. You can adjust the temperature in the house appropriately, drink more plain water in daily life, you can boil water with pears, pay attention to more rest, it is recommended to pay attention to the neatness of the environment and try to avoid contact with old books, old newspapers, animal hair and other substances that may trigger allergy, patients can also take some anti-allergy drugs under the guidance of the doctor to control the condition. In conclusion, coughing in the morning may be caused by considering allergy, inflammation, foreign body irritation, etc. It is important to actively find the cause and treat it in time, pay attention to a light diet and maintain environmental hygiene in daily life to control the condition.