Objective: to evaluate the usefulness of perineal Biofeedback in pelvic floor dysfunction.Results: the rehabilitation of the pelvic floor muscles with biofeedback techniques, conservative treatment is most commonly used for women with symptoms of urinary incontinence or pelvic floor prolapse. Biofeedback helps the successful completion of the exercises, and is especially useful in patients who have difficulty in locating the perineal musculature.Conclusions: in the biofeedback of pelvic floor muscle exercises are performed assisted by a team that translates muscle contraction in a graphic, sound or signal both to the patient and physiotherapist perceive their work. The introduction of biofeedback in perineal rehabilitation techniques have improved outcomes, still today, the most effective in the perineal recovery technique.