<p>An investigation has been made into characteristics of polishing magnetorheological fluids. Consideration has been given to the process of magnetic sedimentation. An analysis has been made of the mechanisms causing destabilization of these fluids, which include gravitational sedimentation, aggregation, and oxidation of dispersed phase particles. We have systematized the existing methods of stabilizing magnetorheological fluids that are based on increasing the system′s viscosity, decreasing the particle size, and reducing the difference between the densities of a dispersed phase and a dispersion medium and also on variation of surface properties of magnetic particles. A classification of stabilization methods has been carried out. Ways have been suggested for improving the stability of compositions of polishing magnetorheological fluids, and criteria for their development have been formulated.</p>