1979 graduated from the English Department of Beijing Foreign Studies University.

1984 master of government department, Cornell university,

1988, Ph.D., Department of Government, Cornell University.

1March, 1975 to1February, 1978 as a tour guide and interpreter in Beijing Branch of China International Travel Service.

1May, 1979 to 198 1 July, 1979 as a teaching assistant in Beijing Foreign Studies University.

June 1987 to1October 1988 as a teaching assistant at Vermont State University.

1February 1988 to 199 1 June 1988 as a lecturer and associate professor in Peking University University of International Relations.

From July 199 1 to June 1992, he was a visiting scholar at the University of California, San Diego.

1July, 1992 to1September, 1994, Lecturer of Grade 6, Department of Government, University of Sydney, Australia.

1994 10 has been teaching in Peking University institute of international relations, and has served as an associate professor, professor, doctoral supervisor and vice president.

CPPCC member of the Standing Committee of Beijing Municipal Committee, member of the 10th Chinese People's Political Consultative Conference, member of the 9th Beijing Municipal Foreign Affairs Committee of NLD, and member of the 9th Central Standing Committee of NLD.

In March 2008, he was elected as the 11th Standing Committee of Chinese People's Political Consultative Conference.

On March 20 13, he was elected as the Standing Committee of the 12th CPPCC Municipal Committee.