Steam disinfection device based on tobacco seedbed soil

The utility model discloses a steam disinfection device based on tobacco seedbed soil in the technical field of steam disinfection, which comprises a mobile vehicle, a steam disinfection needle is arranged below the mobile vehicle, the steam disinfection needle comprises a hollow cross rod, the top of the cross rod is fixedly connected with a plurality of electric parts, and the bottom of the cross rod is fixedly connected with a hollow disinfection needle. The disinfection needle is provided with a plurality of symmetrical air vents along the length direction; a pneumatic part is arranged at the bottom of the moving vehicle, the output end of the pneumatic part is fixedly connected with a push rod, a plurality of guide rods corresponding to the vent holes are hinged to the push rod, sealing plates for sealing the vent holes are hinged to the ends, away from the push rod, of the guide rods, and the sides, away from the guide rods, of the sealing plates are hinged to the top walls of the vent holes; and a high