A high frequency operation apparatus includes: a treatment section provided with electrodes for performing treatment of a living tissue a switch section connected to each of the electrodes and switching conduction of the electrodes to configure paired electrodes from the electrodes a power supply section for supplying high frequency power to the living tissue via the paired conductive electrodes a biological information measuring section for sequentially measuring biological information a determining section for determining if the measured values of biological information are within a predetermined range and a control section for performing control so that the high frequency power is supplied to the living tissue by using only the paired electrodes corresponding to the measure value determined as being within the predetermined range.
