The utility model discloses a prefabricated assembled owner becomes base apparatus, including first prefabricated basis (1) and the prefabricated basis of second (2), first prefabricated basis is equipped with two, and every to be provided with two sets of reference columns (3) a plurality of, and the reference column upper end is equipped with the screw thread section, and nut (4) have been screwed up to the screw thread section: the prefabricated basis of second (2) is including base (201), be equipped with in base (201) both sides with reference column (3) cartridge complex registration arms (5), base (201) are connected with footstock (203) through support (202), first prefabricated basis (1) is connected fixedly with the prefabricated basis of second (2) through reference column (3) and nut (4). The utility model discloses rational in infrastructure, easy operation can transport on -the -spot be assembled between/be connected between and fix in mill's customization, and convenient and fast reduces equipment replacement?cycle, shortens the power off time, is suitable for popularization and application.