The utility model relates to a remote controller which comprises a housing, a keyboard mounted on the housing, a processor electrically connected with the keyboard, an analog-to-digital (A/D) converter and a high frequency wireless transmission unit which are electrically connected with the processor, a sampling circuit electrically connected with the A/D converter, and a microphone interface electrically connected with the sampling circuit. The utility model further provides a television system. The remote controller and the television system are simple and convenient to operate and can satisfy the multifunction requirement of users.