Academician Hao Xishan of the Chinese Academy of Engineering said at the “International Annual Meeting on Tumor Biotherapy and Gene Therapy” held in the United States in 2000 that the 21st century is the era of tumor biotherapy. The new anti-tumor effector cell DCCIK researched by Shanghai Academy of Chinese Academy of Sciences for many years uses the patient’s own immune cells, which are infused back into the patient’s body after high-tech cultivation in the laboratory to kill the tumor cells, with almost no side effects, which has greater clinical significance with the anti-tumor treatments such as surgery, chemotherapy and radiotherapy, and prevents the recurrence, metastasis and deterioration of tumors, and has good therapeutic effect. Director Li Xinghua, an expert in the Department of Oncology of Shanghai Eighth People’s Hospital, said, “At present, we advocate the mode of combined tumor treatment. Because the current treatment of malignant tumors is mainly surgery, chemotherapy and radiotherapy, the efficacy of these three means is limited, simply say that the effect of any one of the treatments is not very good, it should be combined with bio-immunotherapy, so we say that tumors should be advocated for combined treatment.” Biological therapy has almost no side effects; tumor patients who receive immune cell DCCIK treatment can delay or prevent tumor recurrence and metastasis after surgery in terms of tumor response; there is desirable progress such as the subsidence of enlarged lymph nodes, the subsidence of chest and abdominal fluid, and the reduction or return to normal of tumor markers in blood; in terms of systemic response, there is an increase in appetite, relief of fatigue, reduction of pain, and subsidence of lower limb edema; and for the ineffective radiotherapy and chemotherapy For patients who are ineffective in radiotherapy and chemotherapy, or those who are resistant to chemotherapeutic drugs, biotherapy can also be used to prolong the survival period and improve the quality of life. It can be said that tumor biotherapy opens a green door to fight cancer.