The invention relates to a conveying belt feeding type combine harvester header, which comprises a conveying belt mounting groove, a left conveying belt, a left conveying belt transmission assembly, afeeding screw drum, a middle conveying belt, a right conveying belt, a feeding screw chain wheel, a power input chain wheel, a transmission chain wheel and a middle transmission belt transmission chain wheel. The left conveying belt is mounted in the conveying belt mounting groove, a bevel gear at the tail end of the left conveying belt transmission assembly is connected with a left bevel gear ofa transmission shaft to drive the left conveying belt to move, the transmission chain wheel on the transmission shaft is connected with the power input chain wheel to drive the feeding screw drum torotate and drive the middle transmission belt transmission chain wheel to rotate so as to drive the middle conveying belt to rotate, and a feeding function is achieved. The conveying belt feeding typecombine harvester header is simple and convenient to use, and by conveying belt feeding for substituting existing single screw drum feeding, accumulation in crop harvesting can be reduced, and harvesting quality is improved.