A perineum probe (1) mainly extends along a longitudinal axis (1a) and comprises a main rod (3) extending along the longitudinal axis (1a), four electrodes (2), vertical projections along the longitudinal axis (1a) of which are basically on the same position, a plurality of arms (4) respectively connected to the main rod (3), and an electric connection member (8) adaptive to enable the electrodes (2) to be electrically connected to an external control device.. The electrodes are separated from each other along a direction perpendicular to the longitudinal axis; each arm is connected with one electrode (2); the electric connection member is formed by a rigid part (8a) disposed in the main rod (3) and the electrodes; the rigid part (8a) comprises a tail end part (8b) in the electrodes; and the tail end part (8b) bends in a wave form to have a contact with different points of inner holes of one electrode (2).