Roof structure of aluminum plate curtain wall

The utility model discloses a roof structure of an aluminum plate curtain wall, which comprises aluminum plates and purlines, the purlines are positioned below the aluminum plates, and the aluminum plates on the left and right adjacent sides are respectively mounted on the purlines; a suspension device is arranged on the purline, one end of the suspension device is installed on the purline, and the other end of the suspension device is connected with the keel frame structure. A groove is formed in one side of the purline, when the left and right adjacent aluminum plates are connected, the first corner of the first aluminum plate on the left side is clamped in the groove of the purline, the second aluminum plate on the right side is pressed on the first aluminum plate, and the second corner of the second aluminum plate is pressed on the other side of the purline and is fixed through a screw; the suspension device comprises a suspension rod, a connecting rod and a mounting clamp, one end of the suspension rod i