Professor Gong is the authoritative expert in treating gastric cancer in the hospital. He has a high theoretical level and rich practical experience in the etiology, pathogenesis, diagnosis and treatment of tumor diseases and digestive system diseases. DC-CIK biological immunotherapy introduced by Beijing 304 Hospital has the characteristics of high safety, painless and quick recovery, with excellent treatment effect and high patient satisfaction. CIK cell immunotherapy is based on the ability of human immune system to monitor and kill tumor cells. Oncologists say that in theory, every cancer patient can benefit from immunotherapy. Because the immune system of early tumor patients is not seriously affected by tumors, they have a good response to immunotherapy and a good curative effect. For patients with advanced cancer, immunotherapy has obvious effect, strong specificity and little toxic and side effects. It plays an important role in comprehensive treatment, which can obviously inhibit the progress of cancer and prolong the life of patients, and is superior to radiotherapy and chemotherapy to some extent.