A component mounting machine that is configured to mount a component on a substrate, the component mounting machine comprising: a component supply device configured to supply the component to be mounted on the substrate; a head having a nozzle capable of holding the component; a movement device configured to move the head in XY-directions; a control device configured to control the component supply device , the head , and the movement device such that a series of works including a pickup operation of picking up the component supplied from the component supply device by the nozzle of the head , a movement operation of moving the head to a predetermined position on the substrate, and a mounting operation of mounting component picked up by the nozzle at the predetermined position is executed; and one or multiple cameras configured to image the component at least two imaging timings during execution of the series of works, wherein the control device is configured to control one of the one or multiple cameras to image the component when the imaging timing is reached, determine normality and abnormality of an operation executed immediately before a current imaging timing based on an image captured at the current imaging timing, classify the image captured at the current imaging timing as a normal image in a case in which a result of determination of the normality and abnormality is made as normal, and characterized in that the control device is further configured to finally classify the image captured at the current imaging timing and a part or all of images, which were captured at imaging timings prior to the current imaging timing and were classified as a normal image, as an abnormal image in a case in which the result of the determination of the normality and abnormality is made as abnormal. a component supply device configured to supply the component to be mounted on the substrate; a head having a nozzle capable of holding the component; a movement device configured to move the head in XY-directions; a control device configured to control the component supply device , the head , and the movement device such that a series of works including a pickup operation of picking up the component supplied from the component supply device by the nozzle of the head , a movement operation of moving the head to a predetermined position on the substrate, and a mounting operation of mounting component picked up by the nozzle at the predetermined position is executed; and one or multiple cameras configured to image the component at least two imaging timings during execution of the series of works, wherein the control device is configured to control one of the one or multiple cameras to image the component when the imaging timing is reached, determine normality and abnormality of an operation executed immediately before a current imaging timing based on an image captured at the current imaging timing, classify the image captured at the current imaging timing as a normal image in a case in which a result of determination of the normality and abnormality is made as normal, and characterized in that the control device is further configured to finally classify the image captured at the current imaging timing and a part or all of images, which were captured at imaging timings prior to the current imaging timing and were classified as a normal image, as an abnormal image in a case in which the result of the determination of the normality and abnormality is made as abnormal. <EOS>