A clinical evaluation of induction and recovery times using a new volatile agent sevoflurane was made in 20 adult patients whose ASA status was 1 or 2. In the operating room, monitors were placed in each patient. Slow induction with 33% oxygen-nitrous oxide and 1% sevoflurane was started by using facemask. The sevoflurane concentration was gradually increased to 4% and maintained until the endotrachial intubation. Avarage induction period was 2.38±0.62 minutes, and the loss of eyelid reflex was 2.23±0.66 minutes. Average time of 9.58±1.90 minutes was required to facilitate the endotracheal intubation. Maintenance of anesthesia with 33% oxygen, nitrous oxide and 1_??_2% sevoflurane was continued until the operation was over. Following the end of operation, all anesthetic discontinued, and ventirated with 100% oxygen. Avarage awaking time from the end of operation was 5.45±1.76 minutes, and extubation period was 7.99±1.93 minutes. We concluded from this study that the induction with and recovery from sevoflurane anesthesia were very quick. Further favorable outcomes will be expected of sevoflurane in venous occasions.