A mobile communication apparatus with multimedia audio/video functions includes an upper casing, a lower casing movably connected to a backside of the upper casing, and an audio/video capturing module mounted on one end of the upper casing. The upper and lower casings are engaged with each other, and the audio/video capturing module is used to receive and sample an image and/or a sound source within an area, and then output an audio/video signal which is sent to a screen display mounted on a surface of the upper casing adjacent to the audio/video capturing module for displaying the image. The upper casing further includes a control circuit therein for driving an optical disk read/write module installed on the lower casing, such that the optical disk read/write module can process the audio/video signal and execute a data burning operation for writing the audio/video signal into an optical disk in the optical disk read/write module.