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 at the gastroesophageal surgical connection, so when eating, food cannot enter the stomach as quickly as normal, but is easily retained in the lumen of the esophagus and refluxed into the pharynx and tracheal cavity, which easily causes symptoms such as difficulty in eating and coughing. 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, difficulty in swallowing and other symptoms. Patients should adhere to 3 principles after esophageal cancer surgery: 1. Small amount and multiple meals. Pay attention to diet, chew and drink slowly, no restriction on food types, not to be overly careful to eat soft food for a long time; 2. Post-meal activities. After meals it is best to stand up and take a walk, do not sit after eating, not to mention lying down; 3, high pillow. Sleep with a pillow high so that the head and shoulders in the “high pillow” state, which helps prevent gastroesophageal reflux. In addition to this, oral acid suppressants and gastrointestinal motility drugs can be taken according to the situation. If there are obvious respiratory tract infections, such as persistent cough, pus sputum, chest tightness and dyspnea, patients should go to the 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.