The therapy of Peyronie's disease is an operative one primarily. Indication for the operative treatment is the penile deviation which prevents the patient from intercourse. The method of choice is plaque excision and subsequent corporoplasty with dermal graft. Good long-term results can also be achieved with a sole straightening of the penile shaft without plaque excision. However, this procedure (Nesbit's operation) results in a shortening of the length. In patients who are suffering from an additional erectile dysfunction an implantation of a penile prosthesis is done accompanied by plaque excision and a corporoplasty with alloplastic material (Dacron, Goretex). In 80% of all cases good postoperative results can be achieved with the operative treatment of Peyronie's disease. Patient's satisfaction is very good with all procedures described above. The exact diagnosis of the erectile quality seems to have a prognostic value for the postoperative result.