The present invention provides a power grid model multi-version multi-tenant management system and method based on distributed storage. The method mainly comprises that a distributed file storage method is used to store and manage historical and future multi-service models of a power grid, so as to improve a storage capacity and availability of multiple versions of models; different versions of model data are stored by using an independent file set, so as to enable multiple users to build mutually isolated model storage and maintain work environments, and improve isolation and security of the multiple versions of model data; a data level segmentation method is used to carry out multi-file data level segmentation storage on a single version of model, so as to improve model data access performance; future model versions can be split and combined, so as to improve a multi-tenant collaborative modeling capability, and ensure online process management of future versions; and , historical versions of models are stored and managed according to differences between models, so that historical models can be managed, traced, and used.