Abstract: The cell treatment apparatus of the present disclosure is a cell treatment apparatus including: an observation unit; a laser emitter; and a controller. The controller includes at least one processor that is configured to detect, using image data that includes the cell captured by an observation unit and a learned model capable of detecting a target cell or a non-target cell, a target cell or a non-target cell in the image data; set a region where the target cell is present or a region where the non-target cell is not present as a laser irradiation region to be subjected to laser irradiation by the laser emitter, and apply a laser emitted from the laser emitter to the laser irradiation region in the cell culture tool to treat the target cell.