The invention relates to a concrete conveying pump. The concrete conveying pump comprises a base, a support block, a controller, a conveying mechanism and a feeding mechanism, the feeding mechanism comprises a hopper, a cover plate, a power assembly, a rotating shaft, a serrated block, a screening net and two stirring plates, the conveying mechanism comprises a driving assembly, a conveying pipe, a connecting pipe and two conveying assemblies, and the conveying assemblies comprise discharging pipes, feeding pipes, sealing plugs and driving rods. According to the concrete conveying pump, large pieces of aggregate and clumps in concrete can be ground into fine and small particles through the feeding mechanism, plugging occurring in the conveying process is avoided, smooth circulation is ensured, not only that, the two feeding pipes provide the concrete for the connecting pipe through the connecting pipe by utilizing the conveying mechanism, so that the concrete is continuously conveyed out from the conveying pipe, the concrete conveying efficiency and the conveying stability are improved, and thus the practicality of the concrete conveying pump is improved.