The present disclosure relates to a device for providing augmented reality that can accurately recognize a writing tool such as an electronic pen to realize motion information of the writing tool over augmented reality contents, and a method for providing augmented reality using the same. According to some embodiments of the disclosure, an augmented reality device includes at least one transparent lens, a support frame supporting the at least one transparent lens, at least one display module configured to display augmented reality contents through the at least one transparent lens, a sensing module at a front of the support frame, and configured to generate image data, and a control module configured to receive motion-sensing signals of an electronic pen to detect motion information of the electronic pen, and configured to modulate the augmented reality contents so that the motion information of the electronic pen is includes therein.