Dual-direct current pre-powering device for tests

The invention provides a dual-direct current pre-powering device for tests. The device comprises a box, a power adapter, a first power plug, a second power plug, a first AC-DC converter and a second AC-DC converter, wherein the power adapter comprises a first power interface, a second power interface and a socket, and is arranged in the box; the first AC-DC converter is connected between the first power interface and the first power plug via a first cable, the second AC-DC converter is connected between the second power interface and the second power plug via a second cable, both the first power interface and the second power interface are electrically connected with the socket user for being connected with a product to be tested, the first power plug is used for being connected with a power supply at a standby site, and the second power plug is used for being connected with a test station power supply. According to the device provided by the invention, the product to be tested can be powered on before enteri