Method and device for controlling drying section exhaust valve and drying section device

The invention provides a method and device for controlling a drying section exhaust valve and a drying section device. The method comprises the steps that a switch valve is arranged between a drying section and a process cavity, a linked valve is arranged at the exhaust valve of the drying section, the linked valve is controlled according to the state of the switch valve, and therefore the switch valve and the linked valve meet the interlocking relationship. The method and device effectively lower the pollution degree of the drying section, the occurring rate of pollutants on the back face of a glass substrate is reduced, and device maintaining convenience and product quality are improved.