1988—200 1, teaching assistant, lecturer and associate professor, Department of Surveying, Nanjing Institute of Civil Engineering and Architecture;

200 1—2004, Head of the Department of Geographic Information and Surveying and Mapping Engineering, School of Civil Engineering, Nanjing University of Technology;

2003—20 10, Assistant Dean of School of Civil Engineering, Nanjing University of Technology;

Since 2004, Professor, School of Civil Engineering, Nanjing University of Technology;

20 10 ——, doctoral supervisor of School of Surveying and Mapping;

20 10 —— Dean of School of Surveying and Mapping, Nanjing University of Technology.