Based on the actuality of smart substation and the requirements of distributed scheduling system, smart substation distributed data platform is proposed and developed. The scheme adopts a two layers distributed database system, the first layer can be divided into multiple regions, and the second layer is the each region which can be deployed multiple different types of database again. In the new platform, the communication mechanism between districts is designed, and the solutions of distributed alarming and distributed monitoring are proposed. The actual application verifies that the deployment scenarios are flexible and the capability of communication is more efficient, and that the scheme has a good prospect of being popularized and used in the field of smart substation.