An electronic device which may be put onto the head of a user is provided. The electronic device includes a housing including an upper surface, a lower surface including an opening, and a rear surface; a bracket including a first surface facing an open front portion of the housing, and a second surface extending rearward from the first surface and facing the opening, and interposed between the upper surface and the lower surface; a camera module disposed on the first surface of the bracket to face forward; and an image output module having at least a portion inserted into the opening, and including a light output member, a semi-transparent lens facing an eyeball of a user, and a light transmitting member optically connecting the light output member with the semi-transparent lens and including at least one of a lens or a mirror.