10 cases Parkinson's disease received intracerebral cograft of Schwann's cells and fetal adrenal medulla. Good result was achieved. In some cases, symptoms continued to improve after one-year follow-up. There was no "rebounce" phenomenon which was often seen in the autologous adrenal medulla transplantation. We conclude that selection of patients, medication of amamtadion after surgery and cografting of Schwann's cells are essential to the satisfactory results.