A component mounting machine includes multiple component supply devices which respectively include multiple component supply units and are exchangeably equipped; a component transfer device in which a reference height as a reference of a lifting and lowering operation of a mounting nozzle is set; a height memory section which memorizes a height unique value that is unique for each component supply device and that is a height unique value based on unit heights of each component supply unit when the component supply device is equipped; and a height correction control section which corrects a lowering operation stroke amount of the mounting nozzle based on the height unique value of the equipped component supply device. Accordingly, an error in a height direction can be comprehensively absorbed and the component can be stably picked up by controlling a component pick-up operation of the mounting nozzle based on the height unique value.