This article analysis the usage of B'-Scan in some special cases in clinical forensic medicine, such as the injuries of eyeball, urinosexual organs (include kidney, ureter, urinary bladder, urethra penis, scrotum, testis, uterus et al) liver-gallbladder-spleen, thyreoid and parathyreoid, and the position and course of the scars in the deep of the body. The result indicates that the B'-Scan can be used to display not only the morphological changes, such as the positions, characteristics and degrees of the injuries, but also the function when to be used combining with the Doppler.