Breasts are the first symbols for all females. It has been shown some of mutual females' confidence comes from perceptions of and attitudes toward their breasts. Therefore, having the breasts be symmetrical and with nice image has become one of the main factors by which females judge themselves. Cosmetic doctor utilizes the position, size and shapes of female's breast to judge whether the breast is symmetrical for breast appearance. Since doctors evaluate the breast symmetry with subjective discrimination (such as vision and sense of touch) without using the auxiliary objective physical parameters. This study used a three-dimensional (3D) optics scanner editing 3D image to obtain full-scale 3D female breast image [1-3]. The CAD system converts the breast position, size and shapes, as the length of the curve between UBL (upper breast line) and NBL (nipple base line), the length of the curve between NBL and LBL (lower breast line), breast volume and breast congruence rate. The objective breast symmetrical evaluation system has a useful index to help females to with their body figure and health management.