A surgical controller for controlling a treatment instrument, the surgical controller including one or more processors configured to: detect whether a switch is actuated; control a first surgical energy source to actuate the treatment instrument to perform a first treatment based on a first surgical energy in response to detecting that the switch is actuated; detect whether a parameter reaches a predetermined value during actuation of the treatment instrument to perform the first treatment; and control the second surgical energy source to actuate the treatment instrument to perform a second treatment based on a second surgical energy different from the first surgical energy in response to detecting that the parameter reached the predetermined value.