The invention discloses a precision integrated magnetic floating bearing and relates to the technical field of bearings. The precise integrated magnetic floating bearing comprises an outer ring (1), an inner ring (10), a ring seat A (2), a ring seat B (16) and a screw (3), wherein the outer ring (1) which is in running fit with the inner ring (10) is arranged at the exterior of the inner ring (10); the ring seat A (2) and the ring seat B (16) which are fixedly connected with each other by virtue of screws (3) are respectively arranged at two ends of the outer ring (1). The precise integrated magnetic floating bearing is compact in structure, simple in structure and convenient for processing and mounting; furthermore, the rotating precision of the precision integrated magnetic floating bearing is obviously improved.