A video and audio recording and/or reproducing apparatus having a lock setting function and a control method thereof. The video and audio recording and/or reproducing apparatus records a video and audio file received from the outside on a storage device, and reproduces and outputs the recorded video and audio file to an external display. The apparatus includes an external input device receiving a function selection signal of the video and audio recording and/or reproducing apparatus, and a main controller displaying a lock setting list screen on the external display upon receiving a signal for setting a lock from the external input device. The main controller sets a lock setting information to prevent an area, on which a video and audio file selected from video and audio files listed on the lock setting list screen is recorded, from being overwritten by a video and audio file to be recorded.