<p>A laser treatment device (100) which is used together with a surgical microscope (200) which images an observation site within a coverage, the device comprising: a laser irradiation unit (109) which emits a laser light as an observation light or a treatment light, and emits the laser light to a position which is at a distance from an emission position of the laser light on a light path of the laser light and which is predetermined within the coverage of the surgical microscope (200); and a guide light irradiation unit (102) which emits a first guide light and a second guide light such that the first guide light and the second guide light intersect at a position at a distance from the emission position of the laser light on the light path of the laser light.</p>
