The utility model discloses a novel concrete spraying device which solves the problems that in the prior art, a concrete spraying device is difficult to arrange and use, low in spraying efficiency andthe like. The device comprises a bridge frame, a spray head assembly and an operation platform frame, an annular rotating track is arranged on the bridge frame; a circumferential rotating mechanism is arranged on the annular rotating rail; the circumferential rotating mechanism is matched with the annular rotating rail and moves along the annular rotating rail, the sprayer assembly is arranged onthe front portion of the circumferential rotating mechanism, and the operation platform frame is installed on the bridge frame, located behind the annular rotating rail and connected with the annularrotating rail through the front-back moving oil cylinder. The whole device is novel and unique in structural form, compact in structure, easy to manufacture, machine and assemble, convenient to maintain and small in space requirement when arranged and used in a tunnel, and circumferential rotation and axial front-back movement of the spray head assembly can be achieved.