Dustproof three-arm cab of heading machine

The invention discloses a dustproof heading machine three-arm cab, and relates to the technical field of heading machine cables.The dustproof heading machine three-arm cab comprises a cab, a driving seat is arranged in the cab, and a biosensor and a sterilization assembly are arranged at the position, close to the edge of one side, of the outer surface of the driving seat. According to the dustproof three-arm cab of the heading machine, when a driver leaves the surface of a driving seat, whether the surface of the driving seat contains harmful bacteria or not is detected through a biosensor, when bacteria exist, an electric telescopic rod is started, a sterilization reagent in a collecting pipe is sprayed outwards through an atomization spray head, the driving seat is disinfected, and therefore the driving seat is protected; and after disinfection is completed, the heating wire is electrically connected with an external power supply, so that the humidity of the surface of the driving seat reaches a standard v