Cough is a common respiratory symptom that can be caused by a variety of reasons. In general, patients with cough should be given sufficient water and calories if their physical condition allows. Drinking enough water daily is good for maintaining the moistness of the respiratory tract mucosa, which facilitates coughing and phlegm. Also ensure adequate intake of protein and vitamins, such as lean pork, eggs, pears, oranges, etc. It should be noted that in reality, the cause and severity of each patient’s illness can vary significantly, and diet is only one part of the disease treatment. Therefore, if you have any discomfort, it is recommended to actively consult a doctor, who will develop an appropriate treatment plan and give you reasonable dietary advice according to your specific situation.