Coughing after drinking alcohol has the following clinical causes: 1. The presence of infections of the upper respiratory tract that occur in patients, including chronic pharyngitis, usually with dry and itchy throat and other related symptoms. This can lead to coughing and even vomiting due to irritation of the posterior pharyngeal wall during alcohol consumption.2. Lower respiratory tract infections, where patients have respiratory diseases, like chronic bronchitis, obstructive emphysema, pneumonia, etc., can also induce coughing.3. Heart disease, where alcohol consumption can lead to heart panic and chest tightness inducing the appearance of heart failure, leading to acute pulmonary edema and coughing. For coughing after drinking, you can standardize the examination and treatment under the guidance of a doctor, especially chest CT, etc. You can usually reduce the number of times you drink alcohol, exercise appropriately, and treat the cause of the disease.