The invention discloses a concrete polisher for building construction. The concrete polisher comprises a sliding groove fixing ring plate, four disc plates are arranged at the top end of the sliding groove fixing ring plate and distributed on the sliding groove fixing ring plate in an annular array manner, a bent rod is arranged in the middle of each disc plate, a vertical rod is arranged on one side of each bent rod, the bent rods rotatably connected with the vertical rods through threaded columns, universal wheels are arranged at the bottom ends of the vertical rods, and an inclined rod is arranged on the inner side of the sliding groove fixing ring plate. The concrete polisher is provided with the bent rods and the vertical rods, the bent rods arranged on the disc plates have supportingfunctions, the vertical rods fixed onto the bent rods rotate to a vertical state and are fixed in the carrying process of the polisher, so that the universal wheels mounted on the vertical rods contact with the ground, the polisher can be pushed to conveniently and rapidly move and conveniently carried, and time and labor are saved.