In a juicer with an air extraction function, a feeding barrel (8-1, 8-2, 8-3, 8-4) is disposed on a juicing cavity (10-1, 10-2, 10-3, 10-4), and the juicing cavity (10-1, 10-2, 10-3, 10-4) is internally provided with a juicing mechanism. An output shaft of a juicing motor (2-1, 2-2, 2-3, 2-4) is connected to a driving shaft (18-1, 18-2, 18-3, 18-4) of the juicing mechanism. The juicer further comprises an air extraction device (1-1, 1-2, 1-3, 1-4). A sealing device is disposed at the feeding barrel (8-1, 8-2, 8-3, 8-4). Mutual joints of mutually connected cavities formed among the feeding barrel (8-1, 8-2, 8-3, 8-4), the juicing cavity (10-1, 10-2, 10-3, 10-4), a juice receiving portion, and a residue portion (13-1, 13-2, 13-3, 13-4) are in a sealed connection, and a joint between the cavity and any component is sealed. The cavity is a closed cavity during juicing. An air extraction hole of the air extraction device (1-1, 1-2, 1-3, 1-4) is in communication with the cavity, and an air outlet (3-1, 3-2, 3-3, 3-4) of the air extraction device (1-1, 1-2, 1-3, 1-4) is located outside the cavity. The juicer can enable foodstuff in the juicer to be juiced under an oxygen deficient condition, so that browning is effectively controlled, browning of liquid of the foodstuff is reduced to a great extent during juicing, nutrition loss is reduced, and good flavor, appearance and color are kept.Dans un presse-fruits ayant une fonction d'extraction d'air selon l'invention, un tube d'alimentation (8-1, 8-2, 8-3, 8-4) est disposé sur une cavité de production de jus (10-1, 10-2, 10-3, 10-4) et l'intérieur de la cavité de production de jus (10-1, 10-2, 10-3, 10-4) est doté d'un mécanisme de production de jus. Un arbre de sortie d'un moteur de production de jus (2-1, 2-2, 2-3, 2-4) est relié à un arbre d'entraînement (18-1, 18-2, 18-3, 18-4) du mécanisme de production de jus. Le presse-fruits comprend en outre un dispositif d'extraction d'air (1-1, 1-2, 1-3, 1-4). Un dispositif d'étanch
