The invention provides a software black-box testing system and method of an intelligent electric-energy meter. The system includes the to-be-detected intelligent electric-energy meter, fault injectiontesting equipment, load and ripple detection equipment and a data analysis server. The data analysis server sends a fault injection instruction to the fault injection testing equipment, sends a second fault injection instruction to the load and ripple detection equipment, and analyzes first testing data and second testing data. The fault injection testing equipment injects interference and faultsimulation signals into the to-be-detected intelligent electric-energy meter. The to-be-detected intelligent electric-energy meter generates the first testing data. The load and ripple detection equipment collects and processes ripple voltage generated by the to-be-detected intelligent electric-energy meter in a case of having an electronic load, and obtains the second testing data. According to the scheme, the black-box testing method is adopted to automatically test software functions of the intelligent electric-energy meter, testing efficiency, testing coverage and testing depth can be improved, and software quality of the intelligent electric-energy meter can be effectively controlled.