1957- 1960, internship in the Lebedev Institute of the Soviet Union, and research work in the Joint Nuclear Research Institute.

Researcher, Institute of High Energy Physics, Chinese Academy of Sciences, director of Beijing Electron Positron Collider National Laboratory.

In the early 1960s, it was found that there was time inequality caused by free oscillation in the new isochronous cyclotron.

1982- 1983, worked in the western European joint nuclear research center, participated in the design of a new mid-stream antiproton accumulation ring, was responsible for the design of the focusing structure, and developed an achromatic method suitable for small and medium-sized ring accelerators.

From 1983 to 1986, I participated in the design of BEPC storage ring and improved its focusing structure.

From 1986 to 1992, fully lead the construction, operation and improvement of BEPC project, and complete the operation on schedule. The performance of the whole machine is internationally leading among machines in the same energy field.

199 1 was elected as an academician of China Academy of Sciences.