Stomach cancer can be treated, especially in the early stage. Gastric cancer is a common malignant tumor, which will cause upper abdominal discomfort, loss of appetite, nausea and vomiting, etc. However, as long as the disease is detected in early stage and treated as early as possible, most gastric cancers can be cured. The cure rate of gastric cancer can reach more than 90% after surgery in early stage, and 40%-50% of patients with middle stage gastric cancer can still achieve clinical cure after surgery. Surgery is divided into radical surgery and palliative surgery, among which radical surgery is the main surgical method. Radical surgery requires removing the tumor as much as possible to prevent the spread of tumor, and after surgery, radiotherapy is needed to kill cancer cells in the body to prevent the recurrence of gastric cancer.