A surgical 1 apparatus includes: a treatment section 31 for treating a living tissue an ultrasound output section 43 and a high-frequency output section 44 that generate energy for providing ultrasound vibration or high-frequency current to the treatment section 31 a liquid feeding tube 25 and a tube 21b for feeding a liquid an opening portion 21a, provided in the treatment section 31, for feeding the liquid from the liquid feeding tube 25 and the tube 21b in order to feed the liquid to between the living tissue and the treatment section 31 a pump 47 for supplying the liquid to the liquid feeding tube 25 and the tube 21b and a CPU 41. The CPU 41 controls the pump 47 so that in connection with stoppage of an output of the energy from the ultrasound output section 43 and the high-frequency output section 44, the liquid is supplied from the pump 47 for a predetermined period of time or in a predetermined amount after the stoppage of the output of the energy.
