The invention discloses a belt conveyor corridor provided with openable roofs. The belt conveyor corridor comprises a corridor body, wherein the corridor body comprises two supports, two support seats, two power devices, two connecting rods, two rotating bases, two side plates and the two roofs which are symmetrically arranged, the supports are fixed in the middles of the side plates, the support seats are fixed on the supports, the power devices are connected with the support seats, an extending rod of each power device is hinged with one end of the corresponding connecting rod, the rotating bases are fixed at the tops of the side plates, and the other end of each connecting rod is connected with one end of the corresponding roof through the corresponding rotating base; after the two roofs are closed, the two roofs form an inverted V shape, and a rubber plate is mounted at the top of one side of one roof; an upper supporting roller set and a lower supporting roller set of a belt conveyor are mounted in the corridor body; a bottom plate is arranged at the bottom of the corridor body and adopts an inclined structure with two high sides and a low middle, and a concaved ash collecting groove is formed in the middle of the bottom plate. The belt conveyor corridor has the benefits as follows: the belt conveyor corridor is good in sealing performance, high in safety performance, easy to clean and convenient to mount and can safely and efficiently work.