An image display device includes: a projection unit that projects and displays an image onto a screen; a superimposed image drawing unit that generates a superimposed image which is to be displayed to be superimposed on the image; a browser storage unit that stores a browser screen for controlling a display position of the superimposed image from a mobile terminal; a transmission unit that transmits the browser screen to the mobile terminal; a reception unit that receives display position information of the superimposed image obtained by an operation on the browser screen displayed on the mobile terminal; and a control unit that displays the superimposed image, which is generated by the superimposed image drawing unit, so as to be superimposed on the image projected by the projection unit on the basis of the received display position information of the superimposed image.