Xu was born into an intellectual family in Jiangdu County (now
Yangzhou),
Jiangsu, on 7 April 1937. After graduating from the Department of
Engineering Physics,
Tsinghua University in 1961, he became a technician in Beijing Atomic
Energy Institute and Beijing No. 194 Institute. He joined the
Chinese Communist Party (CCP) in July 1980. In August 1987, he became deputy director, researcher and technical director of Fast Reactor of
China Institute of Atomic Energy, and served until 1996. ==Honours and awards==