The invention relates to a device for measuring the muscular strength of the pelvic floor, comprising a speculum (1) consisting of two pivotally coupled parts (11, 12), each part having a grip area (31, 32) and a front area (41, 42) that is to be introduced into the vagina. A surface electrode movement sensor (2) is coupled to the grip area (32) of the speculum, with a spring (21) having a known constant K, said spring (21) having a wire diameter of between 0.5 and 1 mm, said sensor being associated with a module for reading (50) the movement. The device according to the invention also has a system for measuring parasite muscular activity by means of surface electrodes (52) associated with a strength reading module (51).
