The term "social security co-ordination account" originated from the name of the social security fund co-ordination office established in China after the 1970s. At first, it refers to the co-ordination management of labor insurance system funds, and then it is used to fund various social insurance projects. The international equivalent English term is "pooling", which is the concept of fund risk pool. Therefore, the overall level of social insurance can be understood not only from the administrative level, but also from the adjustment range of the coverage population.