First of all, the diagnosis must be clear, and the stage and staging of the tumor should be analyzed through pathological diagnosis, and only on this basis can the corresponding treatment plan be given. For example, more than 90% of early gastric cancer patients can be removed through surgery, while progressive gastric upper cancer requires complete removal of gastric tissues, and pre- and post-operative radiotherapy. In recent years, there is no major breakthrough in gastric cancer treatment, but there are more new advances and the treatment effect is steadily improving. New advances include the following aspects: 1. More standardized surgical methods. 2. The emergence of new drugs and adjuvant treatment methods have improved the treatment effect of gastric cancer. 3. Changes in the concept of gastric cancer treatment. In the past, patients usually underwent surgery and post-operative adjuvant radiotherapy, but nowadays, through clinical research at home and abroad, the concept of perioperative adjuvant treatment is becoming more and more important, and perioperative adjuvant treatment means adjuvant treatment before and after surgery. This treatment can improve the survival rate of patients compared to the traditional surgical approach.