A food production line comprises: a rolling mechanism (101), comprising at least one pair of rollers (1011); and a cooling circulatory system (102). The cooling circulatory system is used for providing a coolant to at least part of the rolls, so as to cool the rolls during the rolling process of the rolls. Also disclosed is a food processing method using the food production line. By means of the food production line, the temperatures of the surfaces of the rolls keep low, the temperatures generated in the frictions between the rolls and semi-finished materials during the rolling are reduced, and in this way, the semi-finished materials are kept in a low-temperature state, so as to inhibit the survival and the growth of bacteria and putrefactive microorganisms, thereby effectively prolonging the freshness keeping period and the quality guarantee period.
