The invention discloses a fumigating cabinet, comprising a cabinet, a heat-conducting plate and a pipe; the pipe is positioned between the heat-conducting plate and the bottom of the cabinet, the pipe is in contact with the heat-conducting plate, and a thermal medium flows in the pipe. The thermal medium which flows in the pipe is steam, the pipe is provided with a steam inlet and a steam outlet,and the steam enters the pipe through the steam inlet and flows through the pipe to enter the cabinet from the steam outlet. The fumigating cabinet also comprises a steam generator, and the outlet ofthe steam generator is connected to the steam inlet. When the thermal medium flows in the pipe, part of heat disperses outwards through the wall of the pipe and is conducted by the heat-conducting plate, thus raising the temperature of the bottom of the cabinet and thoroughly solving the problem of low temperature at the bottom of the cabinet.