It is true that there are many young gastric cancer patients, and a large proportion of them are in the middle and late stages, which is more difficult to treat. 20-40 years old gastric cancer patients have locally advanced stage, also have liver metastasis, or abdominal metastasis, and female patients also have more ovarian metastasis. The overall incidence of tumor is high in older patients, but now the proportion of younger patients is increasing. The causes are partly genetic and partly related to poor dietary and work habits. Among the young gastric cancer patients treated in the past, some of them have typical family history, and some of them do not have gastrointestinal cancer patients in their family. However, most of them have bad eating habits. The treatment of young gastric cancer patients is not special and follows the general principles of gastric cancer treatment. The treatment plan is decided according to the stage. There are large individual differences in prognosis. There was a 26-year-old man with advanced gastric cancer who could not eat and was basically in a state of abandonment. The patient’s family had a strong will to treat the patient, and considering that the patient could not eat, they tried to see if there was a chance of palliative surgery, and laparoscopic exploration revealed that although the tumor was locally large, there was no extensive infiltration with the surrounding organs, so it could be surgically removed, and there were a few metastases in the peritoneum. So total gastrectomy was performed, intraoperative and postoperative chemotherapy with continuous intraperitoneal thermal perfusion was given, and postoperative systemic drug therapy was continued. The patient is currently alive for more than 2 years with no significant evidence of tumor on review. This patient undoubtedly benefited from surgery, without which it would have been difficult to even eat for more than six months. For advanced gastric cancer, if there is no obstruction or bleeding, surgery is usually not the first step. The main treatment is drug therapy, chemotherapy, targeted drugs or combined immunotherapy. According to the genetic test results, if HER-2 is amplified, chemotherapy combined with trastuzumab can be used; in addition, if PD-1 immunotherapy is suitable, then chemotherapy combined with immunotherapy may have a good effect. PD-1 immunotherapy mechanism However, if there is an obstruction or bleeding, there is still a chance of palliative surgical resection, which can be considered and will relieve the symptoms and may also prolong survival. Therefore, for young people, they need to pay attention to their diet and good habits. If you have chronic gastritis, H. pylori infection, long-term bad habits (smoking, drinking, high salt diet, etc.), gastric polyps, previous gastric surgery, and family history of gastrointestinal cancer, you should have regular checkups. If you have any discomfort, you should consult a doctor in time to detect the problem early and treat it early.