Smoking box for preparing COPD animal model

The utility model relates to a laboratory animal model preparation facility, in particular to a smoking box for preparing a COPD animal model, which comprises a combustion box, a smoke conveying pipe, a smoking box, a smoke collecting hood and a smoke purifier, the smoke conveying pipe is communicated with the upper part of the combustion box and the lower part of the smoking box, an axial flow fan is arranged on the smoke conveying pipe, the smoke collecting hood is an inverted funnel-shaped shell, and the smoke purifier is arranged in the smoke collecting hood. The smoke collecting hood is connected to the top of the smoking box, the smoke purifier is communicated with the top of the smoke collecting hood through a hose, the purpose of automatic air supply is achieved through the axial flow fan, and the stability of the smoke supply amount is guaranteed while the labor intensity is reduced; the internal structure of the smoking box is optimally designed, so that the smoke feeding amount is uniform and stabl