The private fixed device is needed for a radiation therapy about breast cancer. But this option is wrong applies to every hospital. Thereupon, we will establish standard of option for body-specific. 42 patients on 4 months were enrolled. The option of fixed device applied to divide into 6 kinds. The images were analyzed by OBI. In result, It is excellent reproducibility of position by all body-specific that It is applied head holder, shoulder holder, cotton, kneefix.