Legal analysis: catering services with business licenses include five categories. The first category: super-large restaurants, large restaurants, canteens of schools (including kindergartens) with more than 311 people, canteens of institutions, enterprises and institutions with more than 511 people; The second category: medium-sized restaurants, fast food restaurants, school canteens with less than 311 people, and canteens of institutions, enterprises and institutions with 51-511 people; The third category: small restaurants, snack bars, beverage shops, canteens of institutions, enterprises and institutions with less than 51 people serving meals; The fourth category: construction site canteen; The fifth category: collective dining distribution units.

Legal basis: Article 5 of the Examination Standard for Catering Service License: The examination of catering service license shall be conducted according to the following categories: Category I: super-large restaurants, large restaurants, canteens of schools (including kindergartens) with more than 311 people serving meals, and canteens of institutions, enterprises and institutions with more than 511 people serving meals; The second category: medium-sized restaurants, fast food restaurants, school canteens with less than 311 people, and canteens of institutions, enterprises and institutions with 51-511 people; The third category: small restaurants, snack bars, beverage shops, canteens of institutions, enterprises and institutions with less than 51 people serving meals; The fourth category: construction site canteen; The fifth category: collective dining distribution units.