Clinical causes of nocturnal cough are as follows: i. Cough variant asthma. Cough variant asthma can present with cough exacerbation at night. If the patient is diagnosed with cough variant asthma, inhale Symbicort or Sulforaphane, take oral montelukast, and avoid contact with allergenic substances such as animal fur or pollen. Secondly, severe pneumonia may worsen the cough at night. If patients are diagnosed with bacterial pneumonia, they need to be treated with antibiotics, commonly used antibiotics include amoxicillin sodium sulbactam sodium, moxifloxacin, levofloxacin and so on. If a patient is diagnosed with cardiac insufficiency, he or she should be treated with cardiotonic, diuretic, vasodilator and other related drugs, such as nitroglycerin, cetiran, digoxin, etc.