Inhalation contamination cabinet

The utility model discloses an inhalation contamination cabinet which comprises a contamination cabinet and further comprises an adjusting mechanism which is arranged on a protective cover and used for adjusting redundant space in a cabinet body, the adjusting mechanism comprises an adjusting plate, the adjusting plate slides in the cabinet body, one side, close to the protective cover, of the adjusting plate is fixedly connected with an adjusting pipe, and the adjusting pipe is connected with the protective cover. The adjusting pipe is in threaded connection with a threaded rod, and the end, close to the protective cover, of the threaded rod is fixedly connected with a connecting rod. Through the arrangement of the adjusting mechanism, under the blocking effect of the adjusting plate on the internal space of the cabinet body, the medicine receiving space of animals is changed, so that the feeding amount of tested chemicals can be reduced, the medicine concentration in the medicine receiving space of the anim