Composite aluminum veneer capable of preventing falling off during installation

The utility model discloses a composite aluminum veneer capable of preventing dropping during installation, which relates to the technical field of aluminum veneers, and comprises a first aluminum veneer, a second aluminum veneer and a third aluminum veneer, a fixed block is arranged above the first aluminum veneer, a screw rod is arranged in the fixed block, the screw rod is in threaded connection with a first sliding block, and the second sliding block is in threaded connection with a second sliding block. The device is provided with an anti-falling structure, a handle on one side of a fixing block is rotated, a lead screw in the fixing block is made to rotate, first sliding blocks above the two ends of the lead screw move in sliding grooves in the fixing block at the same time, the first sliding blocks are pressed down after moving to clamping grooves above the first aluminum veneer and the second aluminum veneer, the lead screw is rotated again, and the first aluminum veneer and the second aluminum veneer