Video matrix switching device

The invention discloses a video matrix switching device, and belongs to the field of audio and video input and output equipment, the video matrix switching device comprises a shell formed by clamping a mounting shell and a cover plate, a mainboard located in the shell and a wire connector rotatably arranged on one side of the mounting shell, and two corresponding side plates of the mounting shell are provided with coolers; by arranging the coolers, the special shape of the mounting frame and the opposite mounting directions of the fans on the coolers on the two sides are utilized, so that the multiple fans on one side blow air to the refrigeration faces of the adjacent semiconductor refrigeration pieces; air flow enters the mounting shell from the upper end opening and the lower end opening of the corresponding mounting frame after being cooled through the refrigeration face of the semiconductor refrigeration piece, and the multiple fans on the other side directly blow air into the mounting shell. And the nea