Esophageal cancer is a serious malignant tumor, and patients keep coughing after esophageal cancer surgery, which may be caused by a small amount of postoperative pleural effusion, stimulation of trachea and bronchus by thoracic stomach, gastroesophageal reflux, lung infection and so on. Different causes of different treatments, generally through drug treatment, surgical treatment and so on. 1. Small amount of postoperative pleural effusion: the effusion leads to pleural irritation causing coughing, if the effusion is small, the body will absorb it by itself, if the effusion is large, it needs to be treated by closed drainage surgery of the thoracic cavity. 2. Thoracic gastric irritation of trachea and bronchus: irritation leads to coughing, there is no effective treatment for this condition, we can only rely on the body to adapt slowly. 3. Gastroesophageal reflux: Gastroesophageal reflux irritates the throat and causes coughing. At this time, you need to reduce the intake of food, make a habit of moving half an hour after meals, and do not eat food, especially liquid food, before bedtime. At the same time with medication, such as omeprazole and so on, in order to achieve the purpose of reducing gastroesophageal reflux. 4. Lung infections: Lung infections can cause coughing symptoms. When lung infection occurs, you should cough and expel phlegm actively, and then choose appropriate antibiotics for treatment according to the results of bacterial culture or sputum culture. If you feel unwell, you should consult a doctor promptly to avoid delaying your condition. Please strictly follow the doctor’s instructions for medication, and do not use medication on your own.