The menu price positioning of catering industry is related to the store rent, the number of waiters, the market price of dishes, and the pricing of seasoning cost. For example, a simple fried lettuce is positioned between 18 yuan and 25 yuan, and the sales ability of each lot is different. As far as 18 yuan is concerned, the market buys a catty of lettuce in 3 yuan, and 1 yuan is used for seasoning. 2 yuan is added to the rent, and 1 yuan (salary), a waiter of kitchen chef 2 yuan, is charged with electricity and water.