The invention discloses a pipe orifice polishing device for water pipe production, and in particular relates to the field of pipeline manufacturing. The pipe orifice polishing device comprises a base,and four pad feet are arranged at the bottom of the base. A fixed plate is arranged on the outer side of the base, and a motor is arranged in the middle of the top of the base. Electric push rods arearranged at the four corners of the base, and upper frames are arranged at the tops of the electric push rods. A sand cylinder is arranged at the top of the motor, and a sand column is arranged in the middle of the inner part of the sand cylinder. Air cylinders are arranged at the two ends of each upper frame, and the air cylinders are fixedly connected with the upper frame. A card plate is arranged at the tail end of each air cylinder and is fixedly connected with the air cylinder. According to the pipe orifice polishing device, by starting the motor, the sand cylinder can rotate to polish the outer side of a pipe orifice; with the use of the sand column, the inner side of the pipe orifice can be polished; and thus, the polishing efficiency is improved. The motor is in threaded connection with the sand cylinder, so that different sizes of sand cylinder can be convenient for users to change.