Airtight roller shutter door

The invention relates to the field of roller shutter door equipment, in particular to an airtight roller shutter door. The airtight roller shutter door comprises curtain cloth, a door frame, a winding roller, a driving roller and a driving device serving as a power source. The winding roller is in synchronous transmission connection with the driving roller, and the curtain cloth is wound on the winding roller in a rollable mode. Chain teeth extending along the side parts of the curtain cloth are arranged on the two transverse sides of the curtain cloth, chain wheels matched with the chain teeth are arranged on the two axial sides of the driving roller, the curtain cloth makes contact with the driving roller when being wound or unwound, and the chain teeth at the two transverse ends of the curtain cloth are in meshed transmission with the chain teeth on the chain wheels. A sliding groove for the curtain cloth to slide up and down is formed in the end face of the inner side of the door frame, an air bag which e