Testing device, system and method for double-way power supply of board card

The invention provides a testing device, system and method for a double-way power supply of a board card. The method specifically comprises the following steps: receiving the registration information of at least one tested board card inserted on a testing carrier, and establishing corresponding test connection; sending a control command for controlling the state of a switch of a primary power supply and/or a standby power supply of the tested board card; detecting the tested board card for obtaining the corresponding voltage value of the tested board card when the primary power supply supplies power, the standby power supply supplies the power, or the primary power supply and the standby power supply supplies the power at the same time. According to the testing device, system and method for the double-way power supply of the board card provided by the invention, minimum resources are used for solving the problems existing in the intelligent tests of the primary power supply and the standby power supply of the board card, and simultaneous tests of a plurality of board cards of different models can be supported for improving the testing efficiency.