A surgical apparatus includes: a treatment section treating a living tissue； an energy generation section providing high-frequency current to the treatment section； a liquid feeding conduit feeding a liquid to the living tissue； a suction conduit suctioning the liquid； an energy control section that outputs a high-frequency output control signal for controlling the energy generation section； a first pump drive section that feeds the liquid from the liquid feeding conduit while the high-frequency current is output, according to a command of the high-frequency output control signal, and stops feeding of the liquid, according to a command of the high-frequency output control signal； and a second pump drive section that suctions the liquid from the suction conduit for a predetermined period of time or in a predetermined amount, according to a command for stopping the high-frequency output control signal, and stops suction of the liquid after the suction.
