A head-mounted display comprises: a camera that captures an image of the real space and acquires captured video; a distance-measuring camera that measures a distance from a real object in the real space; and a controller. The controller comprises: captured object processing for recognizing the real object from the captured video; AR object processing for obtaining the AR object and assigning a position, which includes a distance in the real space, to the AR object, and displayed video generation processing for generating displayed video in the MR space while reflecting the perspective of the real object and the AR object in the video. The controller is further provided with: processing for detecting an operation-screen display object from the captured video; and processing for displaying an MR-space operation screen on the operation-screen display object. Video on the operation screen includes the AR object in the MR space.