An vacuum laminator for laminating workpieces includes a grasping assembly, an alignment assembly, a pickup head, and a sealed body. The grasping assembly is configured for grasping one workpiece. The alignment assembly is connected to the grasping assembly for adjusting a position of the workpiece on the grasping assembly. The pickup head is configured for picking up another workpiece. The grasping assembly and pickup head are received in the sealed body opposite to each other. The grasping assembly includes two grasping members grasping and releasing the workpiece.