Abstract: Current China standard sizing systems for female garments shows a lack of definite age division, regardless of the body variation of different ages. In order to improve the coverage of standard sizing systems, the large number of body data of 788 female subjects aging 18-51 was analyzed and six characteristic factors were extracted by factors analysis. Based on the contribution of each measurement index and correlation of each other, vital characteristic index was confirmed. And female body type was scientifically classified into three kinds, which were young female (18-27 years old), mature female (28-44 years old), middle and old-aged female (45-51years old) by the optimal segmentation method for orderly samples. The body type variation and subclassification of each kind was analyzed. Finally, the characteristic index of intermediate body type for all ages was obtained. It offered an excellent reference for modifying garment standard sizing system and pattern making.