PURPOSE: To provide a continuous food freezing device in which a conveyor net can be positively cleaned continuously, germs are prevented from being adhered to an item to be frozen oil is prevented from being adhered and accumulated at a return roller and the conveyor net can be smoothly moved.

CONSTITUTION: A going-side 2 of a conveyor net 1 rotated endlessly in a horizontal direction while being driven by a driving device M is passed within a main body 3 of a freezer. An item 5 to be frozen which is mounted on the conveyor net 1 is frozen continuously and transported to a transporting-out part 6. A returning side 7 of the conveyor net 1 is supported and moved by a return roller 8 at a bottom part out of the main body 3 of the freezer, and then conveyor net cleaning devices 9a and 9b are installed at both sides of the lower part of the returning side 7 of the conveyor net 1. The cleaning device 9a is a complex cleaning type in which an immersed cleaning tank 10 having detergent therein and a hot water injection and cleaning tank 11a are coupled to each other. The cleaning device 9b is a single cleaning type comprising a hot water injection cleaning tank 11b.