The invention discloses a historical data storage method. Read-write method, Storage device and equipment, The method belongs to the same power system resource type. wherein a group of measurements with the same measurement value acquisition period are stored in a historical data table; The measurement historical values, collected at the same time point, of the same power system resource object are located in the same record, so that when multiple pieces of measurement value data of the same power system resource object are stored, the time value does not need to be repeatedly written in, thestorage requirement is reduced, and the storage efficiency of power grid CIM model measurement historical data is effectively improved; During reading, a plurality of measurement values of specified time can be obtained at a time, so that the access efficiency is improved; The technical problems of low storage efficiency and low data access efficiency of an existing measurement historical data storage mode are solved.