In this research, 425 female students were selected as the research objects. Point clouds were obtained by 3D body scanner, then the characteristics of female lower body parts' (waist, abdomen, buttock) section shapes were identified .And the sizes of the width and thickness were measured by a data acquisition software named Imageware.The front and back circumferences were analysed by software of SPSS16.0.This research is main to provide a new method to divide and calculate body front and back circumferences, laying the foundation for fitting of women clothes.