How long one can live after gastrectomy depends on one’s physical condition and the degree of the disease. Generally, the survival rate of 5 years after gastrectomy is about 20%, so it is necessary to pay attention to more rest, regular diet, good living habits, and avoid the intake of spicy, stimulating, greasy and cold food. At the same time, we must actively correct the infection of H. pylori and actively carry out radiotherapy treatment to prevent cancer recurrence or metastasis, which will aggravate the damage to the body. Gastric cancer is a malignant tumor with strong invasive and metastatic power. The most common metastatic sites are local lymph nodes and liver, and also ovarian implantation metastasis, so it must be detected and treated as early as possible to improve the survival rate.