What should be done for reflux after gastric cancer resection? The details are as follows: I. Conservative treatment, giving drugs to inhibit acid, protect gastric mucosa and promote gastrointestinal peristalsis, is effective for patients with mild symptoms of postoperative reflux after gastric cancer surgery, and the discomfort such as acid reflux and heartburn can be alleviated after treatment. If postoperative reflux symptoms of gastric cancer are serious and conservative treatment is ineffective, gastroscopy is feasible to further define the degree of reflux and give endoscopic treatment. Thirdly, if the reflux symptoms are serious and seriously affect the daily life, surgery is needed to relieve the pain of patients if necessary, and note that the reflux symptoms appearing after gastric cancer surgery are commonly due to complications. Therefore, when acid reflux, heartburn and other uncomfortable symptoms appear after surgery, attention must be paid to them and timely go to the hospital for consultation and gastroscopy if necessary, to further clarify the cause of the disease and choose the treatment plan according to the patient’s actual situation, so as to avoid delaying the condition, and at the same time, pay attention to the rechecking of routine blood test, tumor markers, liver function, renal function, abdominal ultrasound and so on, and pay close attention to the changes of the patient’s condition.