Two thirds of the survival time after gastric cancer resection depends on the stage of gastric cancer. around 90% of people with early stage gastric cancer can survive for more than five years. The survival time of gastric cancer after surgery depends on the stage of gastric cancer. Generally speaking, if distant metastasis already exists when gastric cancer is found, the prognosis of patients is very poor, and the five-year survival rate is less than 10%, but if it is found in early stage, there is no lymph node metastasis, and at the same time the tumor only exists in the mucous layer or submucous layer, the five-year survival rate can be up to 90%. If the tumor invades the muscle layer, the five-year survival rate will gradually decrease, and the deeper the invasion degree is, the more peripheral metastases there are, and the worse the prognosis is. Therefore, once gastric cancer is detected, it should be operated as early as possible to prevent distant metastasis and strive for the best prognosis.