Gastric cancer is a kind of tumor with high malignant degree, and if conservative treatment is chosen without surgery, the survival period drops drastically, and the exact duration of life has individual differences. Surgery is one of the important treatments for gastric cancer patients. Clinically, gastric cancer surgery is divided into radical surgery and non-radical surgery. Radical surgery requires complete removal of the primary lesion and clearing of nearby lymph nodes, while non-radical surgery mainly includes palliative and tumor reduction surgery. Doctors usually choose the corresponding surgical plan after evaluating the condition of gastric cancer patients. The prognosis of gastric cancer patients is closely related to the stage. For early gastric cancer, the 5-year survival rate after surgery can reach about 90%. For intermediate and advanced gastric cancer that has entered the progressive or metastatic stage, surgery can be chosen to control the tumor progression if conditions permit, while conservative treatment is chosen to prolong the survival period and improve the quality of life as much as possible if conditions do not permit, and the 5-year survival rate at this time is generally no more than 10%. At present, there is no clear conclusion on the survival period of conservative treatment for gastric cancer, so it is recommended that patients actively cooperate with doctors’ treatment plan and do not easily give up themselves and give up treatment.