An industrial vehicle remote operation system comprising: an industrial vehicle including a vehicle communication unit that performs wireless communication; a remote operation device that includes a remote communication unit for exchanging signals (SGxl, SGx2, SGx3, SGx4, SGx5, SGy) with the vehicle communication unit through wireless communication by establishing a communication connection state with the vehicle communication unit, and that is used to remotely operate the industrial vehicle; an abnormal situation detection unit (64, 73) that detects an abnormal situation in the communication connection state; a mode control unit that controls a control mode of the industrial vehicle, whereby the control mode includes a remote mode in which a remote operation of the industrial vehicle by the remote operation device is performed, characterised in that the system further comprises a cancel operation detection unit (66, 72, 64, 73) that detects an abnormality cancel operation; and in that the control mode includes an abnormal stop mode in which the remote operation of the industrial vehicle by the remote operation device is not performed and shift to the remote mode is prohibited, and a neutral mode in which the remote operation of the industrial vehicle by the remote operation device is not performed and shift to the remote mode is permitted, at least during the remote mode, the vehicle communication unit and the remote communication unit are in the communication connection state, and the mode control unit shifts, based on the detection of the abnormal situation by the abnormal situation detection unit (64, 73) in a situation where the control mode is the remote mode, the control mode from the remote mode to the abnormal stop mode while maintaining the communication connection state, and shifts, based on the detection of the abnormality cancel operation by the cancel operation detection unit (66, 72, 64, 73) in a situation where the control mode is the abnormal stop mode and the communication connection state is established, the control mode from the abnormal stop mode to the neutral mode. an industrial vehicle including a vehicle communication unit that performs wireless communication; a remote operation device that includes a remote communication unit for exchanging signals (SGxl, SGx2, SGx3, SGx4, SGx5, SGy) with the vehicle communication unit through wireless communication by establishing a communication connection state with the vehicle communication unit, and that is used to remotely operate the industrial vehicle; an abnormal situation detection unit (64, 73) that detects an abnormal situation in the communication connection state; a mode control unit that controls a control mode of the industrial vehicle, whereby the control mode includes a remote mode in which a remote operation of the industrial vehicle by the remote operation device is performed, characterised in that the system further comprises a cancel operation detection unit (66, 72, 64, 73) that detects an abnormality cancel operation; and in that the control mode includes an abnormal stop mode in which the remote operation of the industrial vehicle by the remote operation device is not performed and shift to the remote mode is prohibited, and a neutral mode in which the remote operation of the industrial vehicle by the remote operation device is not performed and shift to the remote mode is permitted, a remote mode in which a remote operation of the industrial vehicle by the remote operation device is performed, characterised in that the system further comprises a cancel operation detection unit (66, 72, 64, 73) that detects an abnormality cancel operation; and in that the control mode includes an abnormal stop mode in which the remote operation of the industrial vehicle by the remote operation device is not performed and shift to the remote mode is prohibited, and a neutral mode in which the remote operation of the industrial vehicle by the remote operation device is not performed and shift to the remote mode is permitted, at least during the remote mode, the vehicle communication unit and the remote communication unit are in the communication connection state, and the mode control unit shifts, based on the detection of the abnormal situation by the abnormal situation detection unit (64, 73) in a situation where the control mode is the remote mode, the control mode from the remote mode to the abnormal stop mode while maintaining the communication connection state, and shifts, based on the detection of the abnormality cancel operation by the cancel operation detection unit (66, 72, 64, 73) in a situation where the control mode is the abnormal stop mode and the communication connection state is established, the control mode from the abnormal stop mode to the neutral mode. shifts, based on the detection of the abnormal situation by the abnormal situation detection unit (64, 73) in a situation where the control mode is the remote mode, the control mode from the remote mode to the abnormal stop mode while maintaining the communication connection state, and shifts, based on the detection of the abnormality cancel operation by the cancel operation detection unit (66, 72, 64, 73) in a situation where the control mode is the abnormal stop mode and the communication connection state is established, the control mode from the abnormal stop mode to the neutral mode.