Abstract: egetative Filter Strips (VFS) is a main kind of Best Management Practices applied in USA,because of its effectiveness in stagnating runoff，depositing sediment and controlling non-point source pollution.At present,there are few studies on the quantitative design for VFS in China.This paper summarized the research and practice of VFS design,introduced and compared three typical calculation methods of VFS width,and discussed the existing problems and further research contents of VFS design.

Key words: Suzhou area, Urbanization, Pedodiversity, Spatial-temporal characteristics