A laser ablation device is provided with: a laser light source that outputs a femtosecond pulse laser beam; an optical system that includes a first mirror rotatable about a first axis, a second mirror rotatable about a second axis, a first driving source for rotating the first mirror about the first axis, and a second driving source for rotating the second mirror about the second axis, and that reflects the laser beam from the laser light source toward a sample by the first mirror and the second mirror; and an irradiation controller that, on the basis of the two-dimensional coordinate position of an analysis position, controls the first driving source and the second driving source to irradiate the analysis position with the laser beam.