Mild obstructive ventilation dysfunction is not necessarily chronic obstructive pulmonary disease. Obstructive ventilation dysfunction is a test result, not a specific disease. There are two types of pulmonary ventilation dysfunction: obstructive and restrictive. Obstructive ventilation dysfunction is most commonly seen in chronic obstructive pulmonary disease and bronchial asthma. Obstructive ventilatory dysfunction can be understood as restricted airflow that is blocked while passing through the airways, which can be caused by narrowing or spasm of the airways, or sputum blockage from pneumonia, or a backward fall of the tongue blocking the airways. If you want to identify whether it is chronic obstruction, you can do a bronchodilator test, which is a medication that dilates the bronchial tubes. If this obstruction improves, i.e. the airflow restriction is reversible, it may be bronchial asthma. If this airflow limitation is irreversible, consider chronic obstructive pulmonary disease. Mild obstructive dysfunction alone is not enough to diagnose chronic obstructive pulmonary disease. It is recommended to go to the respiratory medicine department to improve the bronchodilator test, lung CT and other examinations, and consult with a specialized doctor.