PROBLEM TO BE SOLVED: To provide a method for processing food which produces confectionery having high quality equal to that of conventional one, and also a freeze-dry molded fruit juice food having excellent manufacture efficiency compared with that of the conventional one, and which impregnates the freeze-dry molded fruit juice food with chocolate, and to provide a system for processing food.SOLUTION: The method for processing food includes: preliminarily freezing a molded fruit juice food 2a with a freezer 21 at the beginning thereafter processing the food into a freeze-dry molded fruit juice food 2 through a process for drying the food with a vacuum freeze dryer 22 and then, deaerating the freeze-dry molded fruit juice food 2 in a vacuum osmotic device 5 under a reduced pressure of P1 (0.05 Mpa
