An augmented reality device for providing three-dimensional (3D) augmented reality and an operation method of the same are provided. The augmented reality device includes a multi-view picture generation unit configured to generate a multi-view picture including single-view images having respective individual characteristics, and generate an exit pupil including the generated multi-view picture, a waveguide configured to replicate the exit pupil generated by the multi-view picture generation unit, and an eyebox viewing zone generation unit configured to separate the single-view images based on the individual characteristics, and generate a three-dimensional (3D) image by outputting the single-view images in viewing zones in an eyebox corresponding to views of the single-view images.