The utility model discloses a relate to reduction kiln technical field, especially a reduction kiln for producing vanadium trioxide. A reduction kiln for producing vanadium trioxide, including loading attachment, the kiln hood, the kiln body of cylinder, the kiln tail, unloader, strutting arrangement, loading attachment is corresponding with the kiln hood, kiln body one end is connected with the kiln hood, one end is connected with the kiln end portion, the kiln tail is corresponding with unloader, the kiln hood, the kiln body, the kiln tail all sets up on strutting arrangement, the kiln body is made by nickelbase superalloy, still include mechanical gravity rapping device, machinery gravity rapping device sets up on strutting arrangement's upper portion and is located the looper department of shaking that the kiln was personally experienced sth. Part of the body, the kiln hood all adopts high temperature resistant machine combination formula gas tight sealing with the kiln body coupling department and the kiln body with sealing of kiln tail -to -tail linking department. The utility model provides a can normally work under the high temperature condition, and output and the quality vanadium trioxide reduction kiln that can improve.