1. Agriculture, restaurants, cafes and other catering places need a lot of ingredients, and the supply of these ingredients depends on agricultural production, and agriculture is one of the most basic supporting industries of the catering industry.

2. Food processing industry. Many catering enterprises do not buy agricultural products directly from farmers, but purchase them through food processing enterprises. Food processing enterprises will classify, classify and process raw materials and make them into different kinds of food materials to meet the needs of catering enterprises. Food processing industry is also an important partner of catering industry.

3. Logistics and distribution, in addition to food processing enterprises, many catering enterprises also need to buy some non-food materials from wholesale markets or supermarkets, and ask logistics and distribution enterprises to deliver these materials to catering enterprises in time to ensure their smooth operation.

4. Packaging and printing are also very important links for catering enterprises. Good packaging can increase food sales and brand value, and packaging and printing enterprises are also an important part of the catering industry.

5. Service industry, catering industry and service industry are closely related. In the process of catering, the service attitude and service quality of waiters directly affect the dining experience of consumers, and excellent service personnel are a key factor for the success of catering enterprises.