Professor Le Yang is a Fellow of Chinese Academy of Sciences since 1980. He presently serves as the Acting Director of the Morningside Center of Mathematics at the Chinese Academy of Sciences.

Professor Yang was the Director of Institute of Mathematics (1987-1995) and the President of Academy of Mathematics and System Science (AMSS, 1998-2002), Chinese Academy of Sciences. He is the current Professor and Chairman of Scientific Committee of AMSS. He was the Secretary-General (1983-1987) and the President (1992-1995) of the Chinese Mathematical Society.

Mainly engaged in the research on complex analysis, he has made a through study of deficient values and deficient functions and singular directions of meromorphic functions.