An atomic force microscope includes a raster scan control mechanism configured to perform a raster scan between a cantilever having a probe at a free end and a sample relative to each other across an XY plane in a fluid, an interaction control mechanism configured to vibrate the cantilever and to control an interaction generated between the probe and the sample, and a sample information acquisition circuit configured to acquire sample information including inclination information of a sample surface with respect to the XY plane based on a control result of the interaction control mechanism. The interaction control mechanism is configured to control the interaction generated between the probe and the sample in accordance with inclination of the sample surface with respect to the XY plane.