Concrete spraying machine

The utility model discloses a concrete sprayer which comprises a bottom plate, a handrail and an electric box, the handrail is arranged at one end of the bottom plate, the electric box is arranged at the top of the bottom plate, two metal blocks are symmetrically fixed to one end of the bottom plate, a rotating column is rotationally arranged between the two metal blocks, the bottom end of the handrail is fixedly connected with the rotating column, and the bottom end of the handrail is fixedly connected with the rotating column. A containing groove with the section of a circular structure is formed in the rotating column, and a first limiting groove with the section of a circular structure is formed in the inner wall of one side of the containing groove. Through the designed rotating column, the circular groove, the metal ring, the containing groove, the first limiting groove, the limiting block, the stopping groove and the stopping block, the angle of the handrail can be conveniently adjusted, the flexibilit