The service scope of small educational institutions is small. Doing well can form a strong credibility in a small scope, with low cost and high flexibility, which can be quickly adjusted according to market changes. Large-scale educational institutions have strong brand advantages, strong publicity, wide service scope and standardized teaching system, but they have low flexibility and high operating costs, but they can open more branch schools to form scale effect. For example, listed educational institutions such as Longwen and Xueda now have hundreds of branches in Beijing alone. Conservatively speaking, a branch earns 2000 yuan a month, and the whole Beijing area also earns 20w a month.