A work machine including: a plurality of work devices (1A, 1C); an operation device (45, 46, 49) for operating the plurality of work devices (1A, 1C); a position sensor that detects a position of a machine body to which the plurality of work devices (1A, 1C) are attached; a plurality of posture sensors (30, 31, 32, 33, 103, 104) that detect postures of the plurality of work devices (1A, 1C); and a controller having a position computing device (81a, 81b) that calculates positions of the plurality of work devices (1A, 1C) on the basis of outputs from the position sensor and the plurality of posture sensors (30, 31, 32, 33, 103, 104), wherein the plurality of the work devices is a blade work device attached to a lower travel structure and a front work device attached to an upper swing structure, the work machine comprises: a display device on which a position of at least one work device among the blade work device and the front work device and a position of a target work object of the at least one work device are displayed; and a display selection device that is used for an operator to select a work device to be displayed on the display device from among the blade work device and the front work device, the display selection device outputting a first input signal for causing the work device selected by the operator to be displayed on the display device, and the controller further includes a display changeover section that selectively causes the work device corresponding to the first input signal input from the display selection device among the blade work device and the front work device to be displayed and causes the position of the target work object of the work device corresponding to the first input signal input from the display selection device to be displayed on the display device. a plurality of work devices (1A, 1C); an operation device (45, 46, 49) for operating the plurality of work devices (1A, 1C); a position sensor that detects a position of a machine body to which the plurality of work devices (1A, 1C) are attached; a plurality of posture sensors (30, 31, 32, 33, 103, 104) that detect postures of the plurality of work devices (1A, 1C); and a controller having a position computing device (81a, 81b) that calculates positions of the plurality of work devices (1A, 1C) on the basis of outputs from the position sensor and the plurality of posture sensors (30, 31, 32, 33, 103, 104), wherein the plurality of the work devices is a blade work device attached to a lower travel structure and a front work device attached to an upper swing structure, the work machine comprises: a display device on which a position of at least one work device among the blade work device and the front work device and a position of a target work object of the at least one work device are displayed; and a display selection device that is used for an operator to select a work device to be displayed on the display device from among the blade work device and the front work device, the display selection device outputting a first input signal for causing the work device selected by the operator to be displayed on the display device, and the controller further includes a display changeover section that selectively causes the work device corresponding to the first input signal input from the display selection device among the blade work device and the front work device to be displayed and causes the position of the target work object of the work device corresponding to the first input signal input from the display selection device to be displayed on the display device. a display device on which a position of at least one work device among the blade work device and the front work device and a position of a target work object of the at least one work device are displayed; and a display selection device that is used for an operator to select a work device to be displayed on the display device from among the blade work device and the front work device, the display selection device outputting a first input signal for causing the work device selected by the operator to be displayed on the display device, and the controller further includes a display changeover section that selectively causes the work device corresponding to the first input signal input from the display selection device among the blade work device and the front work device to be displayed and causes the position of the target work object of the work device corresponding to the first input signal input from the display selection device to be displayed on the display device.