An energy treatment instrument includes: an insertion section, first and second probes, an output section, and an adjuster. The first and second probes are provided on a distal side along the longitudinal axis of the insertion section. The output section is provided on each of the first and second probes, and is configured to output energy to an outside of the first and second probes when supplied with energy. The adjuster is configured to move the first probe in an extending direction of the first probe and to move the second probe in an extending direction of the second probe with an amount of movement which is different from an amount of movement of the first probe, so as to adjust positions of end portions of the first probe and the second probe.
