The invention discloses a raw material grinding bolt embedded box mounting method, which comprises the following steps: mounting embedded boxes at a plurality of positions on a raw material grinding foundation pier, including a cuboid embedded box body with an opening in one surface and an adjusting device, wherein an opening of the embedded box body faces the outer side of the foundation pier; the adjusting device comprises a central displacement adjusting device and elevation adjusting devices; the central displacement adjusting device is fixedly installed on a vertical prestress steel strand fixing steel frame of the foundation pier, the movable part of the central displacement adjusting device can adjust the central displacement of the embedded box, the elevation adjusting devices arefixedly installed at the four corners of the bottom of the embedded box, and movable parts of the elevation adjusting devices can adjust the elevation of the embedded box. By means of adjusting equipment installed on the vertical prestress steel strand steel frame, the bolt embedded box can be effectively fixed and accurately adjusted. According to the method, the problem of mounting precision ofthe bolt embedded box is well solved, and the horizontal elevation and the center line displacement error of the bolt embedded box can be effectively controlled when the embedded box is mounted according to the process.