The invention discloses a secondary equipment storage processing method and device. The method comprises the following steps: classifying secondary equipment in a transformer substation to obtain different types of secondary equipment; performing model establishment on each type of secondary equipment, and the model corresponding to each type at least comprising a part representing the network information of the type of secondary equipment and a part representing the hardware structure of the type of secondary equipment; and creating a data storage system according to the established model, and the data storage system being used for storing data of secondary equipment in the transformer substation. According to the method and the device, the problems of small storage capacity and poor expansibility when the enterprise-level relational database stores the secondary equipment data in related technologies are solved.