Double-cooling self-cooling type computer mainframe box

The invention discloses a double-cooling self-cooling type computer mainframe box in the technical field of computer cases. The computer mainframe box comprises a case, heat conduction plates are uniformly and fixedly mounted on the bottom wall of the inner cavity of the case, the top end of the heat-conducting plate penetrates through the top wall of the case, a water-cooling pipeline is arrangedon the outer wall of the heat-conducting plate, the water cooling pipeline is positioned in an inner cavity of the case, the top wall of the case is in threaded connection with a heat dissipation airduct, the top wall of the heat-conducting plate is contacted with the top wall of the inner cavity of the radiating air duct, dust baffles are connected to the left outer wall and the right outer wall of the heat dissipation air duct in a screwed mode, two sets of air distribution plates and a draught fan are connected to an inner cavity of the heat dissipation air duct in a clamped mode, the twosets of air distribution p