From the perspective of market failure, the reason why the government intervenes in the field of education is because of the imperfect competition in the education market and the guarantee of educational fairness.

1. Incomplete competition in the education market: There are some problems in the education market, such as asymmetric information, insufficient professional knowledge and uneven quality, which leads to insufficient market competition and makes it difficult for consumers to evaluate and choose educational products and services comprehensively and objectively.

2. Guarantee of educational equity: Education is a social public product and should be provided fairly for the whole society. There are some problems in the education market, such as unfair education and uneven distribution of resources. The government needs to adopt policies and measures to ensure educational equity.