A system for monitoring an outside work area of a component mounting machine, comprising: an external monitoring camera configured to image an external work area that is an area outside of a component mounting machine at which an operator performs work with respect to the component mounting machine; an image recording device configured to record an image captured by the external monitoring camera, an image recognition device configured to process the image captured by the external monitoring camera to recognize the state of the monitoring target, wherein the outside work area includes at least an area in which feeders are set, characterized in that: the system further comprises a display device (19, 42, 45) configured to display an image captured by the external monitoring camera, wherein the display device (19, 42, 45) is configured to display images in real time or images reproduced by being read from the image recording device, in order to check a state of a monitoring target on which an operator performed work in the outside work area, wherein the monitoring target is at least a state during and after completion of setting a feeder on the component mounting machine and during and after completion of setting component supply tape on the feeder, and wherein in a case in which it is detected, based on recognition results of the image recognition device, that the state of the monitoring target is different from a normal state, an indication that the state of the monitoring target is different from the normal state is displayed on the display device (19, 42, 45). an external monitoring camera configured to image an external work area that is an area outside of a component mounting machine at which an operator performs work with respect to the component mounting machine; an image recording device configured to record an image captured by the external monitoring camera, an image recognition device configured to process the image captured by the external monitoring camera to recognize the state of the monitoring target, wherein the outside work area includes at least an area in which feeders are set, characterized in that: the system further comprises a display device (19, 42, 45) configured to display an image captured by the external monitoring camera, wherein the display device (19, 42, 45) is configured to display images in real time or images reproduced by being read from the image recording device, in order to check a state of a monitoring target on which an operator performed work in the outside work area, wherein the monitoring target is at least a state during and after completion of setting a feeder on the component mounting machine and during and after completion of setting component supply tape on the feeder, and wherein in a case in which it is detected, based on recognition results of the image recognition device, that the state of the monitoring target is different from a normal state, an indication that the state of the monitoring target is different from the normal state is displayed on the display device (19, 42, 45). the system further comprises a display device (19, 42, 45) configured to display an image captured by the external monitoring camera, wherein the display device (19, 42, 45) is configured to display images in real time or images reproduced by being read from the image recording device, in order to check a state of a monitoring target on which an operator performed work in the outside work area, wherein the monitoring target is at least a state during and after completion of setting a feeder on the component mounting machine and during and after completion of setting component supply tape on the feeder, and wherein in a case in which it is detected, based on recognition results of the image recognition device, that the state of the monitoring target is different from a normal state, an indication that the state of the monitoring target is different from the normal state is displayed on the display device (19, 42, 45).