Unless the remarkable development of food service industry, many customers are confusing the differences of a taste, a price, a service and so on according to the area or even the similar line of business. To solve this kinds of problem, increase the credibility and standardize the service, the grade valuation system for domestic food service companies is required. The purpose of this study is to contribute for the development of food service industry through the suggestion of desirable grade valuation criterion. The following should be considered to conduct the food service grade system based on the above results. The first, the fair grade valuation system is required. The third, the plan to induce the voluntary attendance should be prepared. To do this, publicity for the grade system is strengthened and the supporting such as tax and fund etc. should be followed.