Zhou Youyuan, born in 1938 in Shanghai, graduated from Dept. of Physics of Peking University in 1960 and was assigned to teaching in USTC afterwards. He was promoted to professor in 1985, and served as the director of Astrophysics Center of USTC from 1991 to 1995. He was appointed to be the deputy director of the academic committee of Laboratory of Cosmic Ray and High Energy Astrophysics, CAS since 1997. He was elected academician of CAS in 2001. Zhou's main researches are on quasars and active galactic nuclei, and also dabbles in the research on cosmology, large-scale structures, and high-energy astrophysics. He has published 117 papers, including 13 papers published on international first-class journals like Ap.J, A&Ap., M.N.R.A.S, 10 papers on Science China. His papers are highly valued by the international academic community. Fifteen of his papers are introduced and cited by international authority journals: Nature, Science, Annual Review of Astronomy and Astrophysics and Physics Report. His research content and significance has been specially introduced by Nature (270,205,1977). He won the Second Prize of CAS Natural Science Award twice, one in 1980 and the other in 1990. He also won CAS Award for Young Scientists with Outstanding Contributions in 1992.