DIGITAL PEN

A digital pen including a pen body and a radio frequency module is provided. The pen body has a first end and a second end. The radio frequency module is installed within the pen body and is used to send out a first signal at the first end and a second signal at the second end. A first frequency region of the first signal is not overlapped with a second frequency region of the second signal. The digital pen utilizes the first frequency region and the second frequency region to be correspondingly used for the writing function and the erasing function separately, such that the digital pen is more convenient for being used by a user.