Hou Bo Fund generally refers to China Postdoctoral Science Fund. China postdoctoral science fund is a kind of scientific research fund with the nature of funding. According to the conditions that the applicant should have, according to the prescribed evaluation procedures, financial rewards will be given in different grades. According to the spirit of "Notice of the State Council on Forwarding Reports of State Science and Technology Commission, Ministry of Education and China Academy of Sciences" and the Articles of Association of China Postdoctoral Science Fund, China Postdoctoral Science Fund was established. It aims to help outstanding postdoctoral researchers complete scientific research tasks, rapidly grow into various high-level professionals, and make contributions to China's science and technology, education, economic development and national defense construction.