1977.12 ~1978.03, driller and fitter of team 32 178 of estuary headquarters of Shengli Oilfield;

1978.03 ~1982.05438+0, Department of Agricultural Mechanization, Shandong Agricultural College, student;

1982 5438+0 ~ Now, the School of Mechanical and Electronic Engineering of Shandong Agricultural University has stayed as a teacher;

1999.1~ 2000.11,visiting scholar in Enesad, France.