A public institution is generally an institution set up by the state with a certain public welfare nature, but it is not a government agency, and its staff are different from civil servants. According to the spirit of the reform of the classification of national public institutions, public institutions are no longer divided into full-funded public institutions and differential-funded public institutions, but are divided into first-class public welfare institutions and second-class public welfare institutions, and public institutions that use state-owned assets have also emerged. Public institutions organized by social capital are public institutions that are not allocated by the state.