The perineum is the soft tissue between the vaginal orifice and anus, and it is a part of the trunk, located at the bottom of the pelvic diaphragm. Clinically, female perineum is usually a soft tissue located between vaginal orifice and anus. The perineum consists of skin and perineal body (i.e. perineal central tendon). The perineal body is a wedge-shaped fibrous muscle tissue that gradually narrows from the outside to the inside. Shafik et al [1] reported that the average width of 46 adult corpses (26 males, 65433) in Egypt was (2.65438±0.6)cm, ranging from 65438 0.5 to 3.2 cm. The average thickness is (0.9 0.1) cm and the range is 0.7 ~ 1.2 cm.