A wearable image display device eliminates the need to adjust an image focus every time the device is used. The present invention includes a mounting module and a right image display module, and a left image display module. Each of the right image display module, the left image display module includes a reflective image modulation device, a lens, a light guide plate, and a plurality of half mirrors. The lens is disposed in a state eccentric to a predetermined value with respect to the reflective image modulation device. As a result, the present invention eliminates the need to adjust the image focus every time the device is used.