A transmission type head mounted display which allows a user to visually recognize a display screen as a virtual image and to visually recognize the display screen at a focal length matching a convergence angle of the user, includes an image analysis portion that recognizes a real object within a view field of the user, a distance sensor that detects a distance from the user to the real object, a display control portion that displays the display screen in which an AR image for the real object is disposed, and a display section that displays the display screen, in which the display control portion displays a screen effect which guides a convergence angle of the user to a convergence angle matching the detected distance, on the display screen.