A multi-functional food processor contains a machine body and a top cover. It further includes a container and a driving device. The drive shaft of the driving device is extended to the container, and a juicer shredder, a vegetable shredder or a meat grinder blade is selectively installed in the transmission shaft, which is connected to the drive shaft. The top cover is provided with two feed tubes, where the first feed tube is used for feeding vegetables and fruits in conjunction with a first pusher. The second feed tube is used for feeding vegetables or meat into a vegetable shredder or a meat grinder blade in conjunction with push of the second pusher. A safety switch is mounted between the feed tubes, and it allows only one pusher to operate in each sole feed tube thus avoiding the food being fed into the wrong feed tube.