1, public welfare, public welfare institutions are fully funded institutions, and the units do not engage in activities, mainly public welfare services, such as public libraries, compulsory education, school education, etc. ?

2. Administrative institutions belong to balance allocation and also provide public services, but they will charge corresponding fees according to the price of public services stipulated by the state, such as some universities and non-profit medical institutions.

3 production and operation, production and operation institutions are self-supporting, and income is linked to profits. Once they are profitable, their income is still considerable, but the fly in the ointment is that not all such institutions will have a good source of income.