The main reason for coughing during the day and not coughing at night is to consider that after local inflammation of the respiratory tissues, the airway mucosal glands secrete fluid, and the mucosal glands are controlled by the cerebral cortical nerves. The cerebral cortical nervous system is in an active state during the day compared to the night, and the secretions in the airway increase accordingly, and the respiratory system causes coughing symptoms out of protective reflex action to help the discharge of secretions from the body, so it The symptom of coughing during the day and not at night. However, this symptom does not exclude cough symptoms caused by allergic factors or environmental stimuli, where the patient’s airways are stimulated by allergens or harmful gases at a specific time and cause a metamorphic reaction. It is advisable to go to a regular hospital for further detailed examination to identify the specific cause of the disease before symptomatic treatment.