The severity of many lymph nodes in the stomach depends mainly on their etiology, such as infection, disease of the lymph itself, and metastasis of cancerous foci. 1. Infection: Infections caused by microorganisms such as viruses or bacteria, such as chronic colitis, chronic bacillary dysentery and other diseases, will cause lymph nodes to proliferate and become larger so as to resist microbial attacks on the human body. Treatment with appropriate antibiotics or antiviral drugs can reduce the size of the lymph nodes, which is usually not serious. 2. Diseases of lymph nodes themselves: lymphoma, leukemia and other diseases of lymph nodes themselves will cause lymphocytes to lose their normal function and lymph nodes will increase in number and become bigger, which is more serious and should be treated with radiotherapy (such as Now Lucky capsule, Porui capsule, hexamethylene glycoside, etc.) and bone marrow transplantation in a timely manner. 3. Cancer metastasis: Gastrointestinal cancer, liver cancer, pancreatic cancer, ovarian cancer and other cancers can be metastasized through lymph. This will lead to multiple lymph node enlargement in the abdominal cavity. At this time, the condition is serious and needs to be actively treated according to medical advice. It should be noted that when the above symptoms appear, one should go to the hospital in time, complete the examination, make a clear diagnosis and then follow the doctor’s advice for active treatment, so as to avoid delaying the condition.