Stomach cancer originates from mucosal epithelial cells in the most superficial layer of the stomach wall, and can occur in all parts of the stomach (the pyloric region of the gastric sinus is the most common, the cardia region of the gastric fundus is the second most common, and the body of the stomach is slightly less common), and can invade different depths and breadths of the stomach wall. Gastric cancer is one of the more harmful diseases, the incidence of which is very high, and the treatment is also difficult to some extent. Chemotherapy, as an important part of comprehensive treatment, is one of the important means to treat gastric cancer today. The commonly used drugs for gastric cancer chemotherapy include furanyl fluorouracil, 5-fluorouracil, adriamycin, mitomycin C, cycloheximide, flucytosine hydroxyurea, ciscloramide platinum, etc., mainly combined chemotherapy. 2.Radiotherapy for gastric cancer Patients with gastric cancer can use radiation therapy not only to relieve the symptoms of obstruction of cardia cancer and reduce chronic bleeding of unresectable lesions, but also to help patients solve the problem of recurrence and metastasis. This treatment method is not very helpful for patients who are not suitable for resection. 3.Immunotherapy for gastric cancer This treatment method has more significant efficacy in the postoperative treatment of early gastric cancer patients, and is also applicable to patients who cannot be resected or palliative resection and those with ascites in advanced stage. 4.Surgery for gastric cancer Surgery is the most feasible treatment for gastric cancer today and has a high possibility of cure. There are several different types of surgical treatment for gastric cancer, namely, distal gastrectomy, proximal gastrectomy, total gastrectomy and total gastrectomy combined with spleen and tail of pancreas, Appleby’s operation, combined gastrectomy of gastric cancer and affected organs, and palliative surgery. In order to improve the cure rate of gastric cancer, a reasonable surgical method should be selected according to the specific condition. As a reminder, surgery for gastric cancer can certainly remove the cancer and is one of the preferred treatments for gastric cancer, but there is a possibility of postoperative recurrence and metastasis.