The invention relates to the technical field of polishing machines and in particular provides a wall surface construction polishing machine for construction. The wall surface construction polishing machine comprises a handle and a buffer box; the top end of the handle is provided with an outer shell; a motor is arranged in the outer shell; a rotating shaft of the motor is connected with one end of a transmission shaft; a key arranged at the surface of the transmission shaft matches a key groove in an end cap; the end, away from the motor, of the transmission shaft is provided with a round disc; the surface of the transmission shaft is provided with a spring in a sleeved manner; one end of the spring is fixed to the surface of the end cap and the other end of the spring is fixed to the surface of the round disc; two limit rings are arranged on the surface of the inner wall of the buffer box; the end, away from the end cap, of the buffer box is provided with a bearing plate; the bearing plate is provided with an annular buffer fixing ring in the circumferential direction; the surface of the bearing plate is provided with a grinding wheel. The spring and round disc structure achieves a good buffer effect on the bearing plate, so that the leveling capability of the polishing machine is improved and the phenomenon of bottom exposure is prevented effectively.