A remote operation device for remotely operating a construction machine having an attachment from a remote place distant from the construction machine, the remote operation device comprising: an image acquiring device that is configured to acquire a work image of the construction machine; a display device that is configured to display the work image at the remote place; an operator's seat in which an operator sits at the remote place; and a remote operation lever to which an operation is applied by the operator sitting in the operator's seat, the operation being an operation for causing the attachment to move; characterized by further comprising an eye tracking device that is configured to acquire a line-of-sight position of the operator sitting in the operator's seat; a posture tracking device that is configured to acquire posture information on a posture of the operator sitting in the operator's seat; an operation determining section that is configured to determine whether the operation applied to the remote operation lever is a fine operation, based on operation information on the operation; a posture determining section that is configured to identify a reference posture of the operator, based on the posture information, the posture determining section determining whether the posture of the operator has changed from the reference posture to a watching posture related to the fine operation, based on the posture information; and an image generating section that is configured to generate, when the operation determining section determines the operation to be the fine operation and the posture determining section determines that the posture of the operator has changed from the reference posture to the watching posture, an enlarged image by enlarging a part of the work image, the part being related to the line-of-sight position acquired by the eye tracking device, and to cause the display device to display the enlarged image. an image acquiring device that is configured to acquire a work image of the construction machine; a display device that is configured to display the work image at the remote place; an operator's seat in which an operator sits at the remote place; and a remote operation lever to which an operation is applied by the operator sitting in the operator's seat, the operation being an operation for causing the attachment to move; characterized by further comprising an eye tracking device that is configured to acquire a line-of-sight position of the operator sitting in the operator's seat; a posture tracking device that is configured to acquire posture information on a posture of the operator sitting in the operator's seat; an operation determining section that is configured to determine whether the operation applied to the remote operation lever is a fine operation, based on operation information on the operation; a posture determining section that is configured to identify a reference posture of the operator, based on the posture information, the posture determining section determining whether the posture of the operator has changed from the reference posture to a watching posture related to the fine operation, based on the posture information; and an image generating section that is configured to generate, when the operation determining section determines the operation to be the fine operation and the posture determining section determines that the posture of the operator has changed from the reference posture to the watching posture, an enlarged image by enlarging a part of the work image, the part being related to the line-of-sight position acquired by the eye tracking device, and to cause the display device to display the enlarged image.