Coughing during the day and night may be due to allergic cough, upper respiratory tract infection, lung cancer etc. It can be treated by medication and surgery under the guidance of a doctor. 1. Allergic cough: patients with allergies, cough symptoms caused by exposure to triggering factors (e.g. pollen, etc.), and in the case of persistent allergens, coughing during the day and night may occur. Patients may be treated with inhaled glucocorticosteroids such as budesonide or oral antihistamines (e.g., loratadine, etc.) under medical supervision. 2. Upper respiratory tract infection: Patients with upper respiratory tract infection may have symptoms such as nasal congestion, cough, sore throat, fever, etc., and may cough both day and night. Patients may be treated by taking cough suppressants, antibiotics and other types of medicines, such as dextromethorphan hydrobromide, moxifloxacin, etc., under the guidance of doctors. 3. Lung cancer: Patients with lung cancer may have symptoms such as cough, hemoptysis, chest pain, fatigue and weakness, and may cough both day and night. Patients may undergo comprehensive treatment mainly based on surgery under the guidance of doctors. Coughing during the day and night may also be due to other reasons, and it is recommended to choose the appropriate way of treatment under the guidance of a specialized doctor. Avoid private medication, causing adverse consequences.