The invention discloses a constructional engineering concrete mixing conveyor which comprises a box. A conveying device is fixedly connected to one side of the bottom of the inner wall of the box, a mixing box is fixedly connected to the top of the outer wall of the conveying device, separating plates are arranged on the two sides of an inner cavity of the mixing box, a first motor and a second motor are fixedly connected to the two sides of the inner wall of the mixing box, output shafts of the first motor and the second motor are rotationally connected with connectors through couplers, and the ends, far away from the couplers, of the connectors are fixedly connected with mixing rotation shafts through flat keys. The constructional engineering concrete mixing conveyor relates to the technical field of conveying equipment. By means of the constructional engineering concrete mixing conveyor, concrete can be stably mixed and conveyed, the work efficiency on a construction site is improved, the number of working steps is decreased, limitation of the environment to concrete transportation and machine overall movement work is reduced, adaptability to the working environment is improved, and the working amount of workers is reduced.