 Methods: Randomized Clinical Trial will be selected in which 30 patients with erectile dysfunction. The men included will be randomized into two groups. The intervention group will conduct therapy with FES 50Hz 500us for 15 minutes with intensity below the motor threshold and the control group will use FES placebo. Two sessions will be held weekly for four weeks. Erectile function will be assessed using the validated questionnaire IIEF-5. The instrument will be completed by blinded researcher and the technique is randomized and the treatment done randomly. 