The main sources of each cell line of gastric cancer are cell type, degree of cell line differentiation, tissue origin, etc. According to different classifications there will be different types of gastric cancer, indicated by the concept of classification in in vitro culture test of gastric cancer, including MKN-45, MGC803, NCI-N87, SNU-5, etc. There are many characteristics of cancer cells, and there are different classifications for different sites, such as primary foci of gastric cancer, perigastric metastatic lymph nodes, cancerous pleural fluid, cancerous ascites and other cancer cells of different origins. And all of them are highly metastatic and highly infiltrative, each cell has its own special structure and different characteristics, which can effectively study the pathogenesis of gastric cancer and the methods of diagnosis and treatment. Generally, gastric cancer can be treated by surgery and chemotherapy, for example, radical surgery and palliative surgery can prolong the survival period of patients and delay the growth of cancer cells. In case of early gastric cancer, early treatment is needed. For gastric cancer that has developed to middle or late stage, cancer cells will metastasize and be more difficult to treat, so patients should actively cooperate with doctors and carry out targeted treatment according to their own conditions and diseases.