Method and device for toughening thin glass

The invention provides a method and device for toughening thin glass. The method comprises the following steps of: in the process that the heated thin glass is conveyed to a quenching device, compressed air cools the surface of the thin glass, the thin glass cooled by the compressed air enters the quenching device, and the quenching device further cools the thin glass. According to the invention,the heated thin glass is refrigerated by compressed air, so that the surface of the thin glass can be quickly cooled; then the thin glass enters the quenching device to be further cooled; due to the fact that the compressed air cools the thin glass before the thin glass is conveyed to the quenching device, deformation of the thin glass caused by the fact that the thin glass which is not cooled isconveyed to the quenching device can be avoided. Due to the fact that the thin glass can be cooled twice after passing through the compressed air and the quenching device, the thin glass can be heatedto a higher temperature in