The utility model discloses a belt cleaning device, comprising an adhesive tape, a pressing plate, slide ways, springs, a crossbeam, a tensioning threaded rod and a pull rod, wherein the adhesive tape is fixedly arranged on the crossbeam by the pressing plate and bolts, the crossbeam is mounted in the slide ways on two sides, the slide ways are welded under the back part of a belt head funnel, two ends of the crossbeam are respectively connected with the spring, the other end of the spring is connected with the pull rod, the middle part of the pull rod is hinged on a belt head wheel shell through a hinged shaft, the other end of the pull rod is hinged with the tensioning threaded rod, and the lower end of the tensioning threaded rod is also connected to the belt head wheel shell. Under the action of the spring, the adhesive tape is always tightly contacted with the working surface of the belt, and residual materials on the working surface of the belt are scraped and fallen onto a following belt conveyer, so that the residual materials are reduced from originally 0.09% to 0.01%, the running rate of equipment can be improved, the tonne expense ratio is lessened, and the labour intensity of workers is reduced.