A smart glasses include: a main frame having an eyeglass frame shape; a support frame coupled to a central portion of the main frame; a first display supported by the support frame and displaying a first image; a second display supported by the support frame and displaying a second image; a first mirror for reflecting the first image; a second mirror for reflecting the second image; a first main lens for providing a first main image from the central portion of the main frame to the inside thereof on the basis of the first image reflected by the first mirror; and a second main lens for providing a second main image from the central portion of the main frame to the inside thereof on the basis of the second image reflected by the second mirror.