After esophageal cancer surgery, because a section of esophagus has been removed, the esophagus becomes shorter, plus there is often anastomitis secondary to the surgery, and there are different degrees of narrowing in the gastroesophageal connection, so when eating, food cannot enter the stomach as quickly as normal people, but is easily retained in the esophageal cavity and refluxed to the pharynx and trachea cavity, which can easily cause symptoms such as difficulty in eating and coughing. This situation is like pouring wine into a small wine glass, too fast or too large an amount will easily spill out. The most common complication of postoperative reflux esophagitis is acidic fluid or food reflux in the pharynx or mouth, often accompanied by burning or painful sensation behind the sternum and difficulty in swallowing. Therefore, post-operative patients with esophageal cancer should pay attention to diet, chew slowly and have small and multiple meals. After meals, it is better to stand up and take a walk, and when sleeping, put the pillow up so that the head and shoulders are in a state of “high pillow”, which can help prevent gastroesophageal reflux. If there are obvious respiratory tract infections, such as persistent cough, pus sputum, chest tightness and difficulty in breathing, patients should go to hospital for active treatment to improve their quality of life after surgery. Patients are prone to nausea, vomiting, loss of appetite, etc. during radiotherapy for esophageal cancer. Generally, they can recover by themselves after treatment, and those with heavy reactions can be treated with drugs.