Abstract: Based on the patent data of the state intellectual property office from 2000 to 2009, the authorization situation of the patent, regions, countries, and patent claims of bio-pharmaceutical industry are analyzed first. Then, the evolution of the biological medicine industry cooperation network characteristics of patent inventor is given. The result shows that: the claimed number authorized number of domestic biological medicine patent are more than abroad; China's bio-pharmaceuticals develop unevenly, which are focusing on a few provinces; the quality of Chinese patents and that of the United States vary greatly; the ratio of the inventor cooperation intensity, average degree of network, high yield inventors and repeat partners appear in constantly increasing trend.