Biotherapy is a new field of treatment and research for major human diseases such as tumors, cardiovascular and cerebrovascular diseases, infectious diseases and autoimmune diseases, which is formed by the intersection of modern biotechnology and clinical medicine. The research scope of biotherapy is very extensive, including biotechnology drugs, gene therapy, immunotherapy (vaccine therapy, antibody therapy, cytokine therapy, etc. ), regulating angiogenesis therapy, stem cell and tissue engineering therapy, induced differentiation and apoptosis therapy and other related basic research, applied basic research, key technologies and product development.