The invention relates to an environment-friendly fox breeding device and relates to the field of animal husbandry. The device comprises a breeding cage arranged on a support, a sealing cover is arranged outside the breeding cage in a covering manner, an air incoming window is arranged on one side of the sealing cover, an air exhaust window is arranged on an opposite side of the air incoming windowand communicated with the upper portion of an air filter through an air exhaust pipeline, the lower portion of the air filter is communicated with an air extraction pump through an air extraction pipeline, calcia particles, calcium chloride particles and activated carbon particles are filled in the air filter sequentially from top to bottom, and a filter net is arranged at an orifice, positionedinside the air filter, of the air extraction pipeline, and the calcium chloride particles are contained in an absorbing groove. Irritant smell emitted by a fox body is absorbed effectively, so that fox breeding environment is protected, and breeders can get a comfortable working environment.