The invention discloses a two-way operational testing system and method for an electric automobile charge-discharge device. The two-way operational testing system for the electric automobile charge-discharge device comprises a first charge-discharge device, a second charge-discharge device, a battery pack, a resistive load, a communication unit, a collection unit and a testing work station; the first charge-discharge device and the second charge-discharge device are simultaneously connected to a power grid; output sides of the first charge-discharge device and the second charge-discharge device are connected to the battery pack in a parallel connection mode; the output sides of the first charge-discharge device and the second charge-discharge device are connected to the resistive load through a switch; the collection unit which is connected to the power grid is connected with the first charge-discharge device and the second charge-discharge device; the collection unit which is connected to the power grid is simultaneously connected with the first charge-discharge device and the second charge-discharge device; a testing workstation, the first charge-discharge device and the second charge-discharge device are in communication through a communication unit. According to the two-way operational testing system for the electric automobile charge-discharge device, the discharging device respectively absorbs power and inverts power from the power grid, a two-way test of the two devices is achieved due to obtaining of small electric energy from the power grid, and an energy-saving and long-time test can be achieved with small energy consumption during a long-time working test.