The present invention provides a memory data quick persistence method based on a storage-class memory. The method is based on a flat mixed memory architecture, and is implemented by collaborative design of a user layer and a kernel layer. The method comprises: abstracting an SCM with a certain capacity and data stored in the SCM into a persistent area; designing an application programming interface (API) at the user layer, and making a response to memory access of an application to the persistent area; extending a Buddy system of a kernel to implement heterogeneous mixed memory management; and designing a persistent area manager to implement the functions of persistent mapping in the persistent area, metadata management in the persistent area and the like. According to the memory data quick persistence method based on the storage-class memory, a data linearization process required for data persistence in a traditional storage architecture can be avoided, direct access and in-place update of persistent data can be implemented, hierarchy invoking of a software stack in the traditional architecture is simplified, the I/O bottleneck can be effectively alleviated, and the memory access performance of the persistent data can be improved.