The utility model discloses a plug and play discharge load based intelligent storage battery pack operating and maintaining device comprising an internal resistance testing unit, a voltage acquisition unit, a plug and play discharge load and a station end control unit, wherein the internal resistance testing unit, the voltage acquisition unit and the plug and play discharge load can be respectively and electrically connected with a storage battery pack and are respectively provided with a serial port communication module, and the serial port communication modules are in communication connection with the station end control unit. The plug and play discharge load based intelligent storage battery pack operating and maintaining device has the following advantages that one discharge load can be recycled in a plurality of storage battery station operating and maintaining systems many times, so that the cost is reduced, and resources are saved; and meanwhile, the device realizes in-station communication by using a safe and stable serial port communication technology, and remote communication is not needed, so that the channel safety problem generated by remote communication is avoided.