The present invention provides an intelligent testing platform of a battery management system and a testing method. The platform comprises a battery management module, a voltage control module, a current control module, a temperature output control module, a processor control module, an input/output control module, a communication module and an upper computer module; and the battery management module, the voltage control module, the current control module, the input/output control module and the communication module are respectively connected with the processor control module, and data communication is carried out between the upper computer module and the processor module through the communication module. The testing module can truly simulate a power battery to accurately test the function and accuracy of the battery management system, and can also simulate environmental impact to test extreme conditions of the battery management system, so that simpler and rapider platform testing can be achieved, and the testing platform can serve as a foundation and guarantee for mass production of the battery management system.