the area of the food processing area is suitable for the maximum number of people to feed, which is less than 211m2, and the ratio of the area to the maximum number of production copies per shift is 1 ∶ 2.5; 211 ~ 411 ㎡, and the ratio of the area to the maximum number of production copies per shift is 1: 2.5; 411 ~ 811 ㎡, and the ratio of the area to the maximum number of production copies per shift is 1: 4; 811 ~ 1511 ㎡, and the ratio of the area to the maximum number of production copies per shift is 1: 6; If the area is larger than 1,511m2, the ratio of the area to the maximum number of production copies per shift can be appropriately reduced. Cooking area ≥ 15% of food processing area, dining room ≥ 11% of food processing area, and cleaning and disinfection area ≥ 11% of food processing area.