The invention belongs to the field of power grid detection equipment, and especially relates to a detection device for power grid interfaces. Provided is the detection device that can detect many kinds of multiple joints, and the multiple joints are quickly connected or disconnected through motions of hinges, so quick detection and batch detection are realized. Function modules are reasonably arranged in position through different hierarchical structures, a core part is arranged in a module box for dual protection, and possibilities of interference and destroy are reduced. A detection stand isarranged on a top layer, so convenience is brought to quick detection and observation on a site. A structure with an upper layer and a lower layer also enables detection devices in the detection stand to be connected with a detection module below and a power supply. A power supply module and a charger are adopted and power of a power grid is sufficient so as to ensure that the device runs continuously. The device has a reasonable structure, is convenient to carry, and is suitable for continuous detection for different regions during inspection of the power grid.