magnetorheological grease(MRG) consists of different types of carriers and magnetic particles were prepared through in-situ saponification method, then the influences on magnetorheological performances of MRG by carrier and magnetic particles were tested by rheometer. Moreover, the suspension stability of MRG were tested by directly observation. The experimental results indicate that, the skeleton microstructures inside MRGs can be controlled by modifying the type of base oil and changing its viscosity, as a result, the magnetorheological performance and suspension stability are effectively improved. Besides, the experimental results reveal that bigger magnetic particles are likely to improve the mobility of MRGs. Meanwhile, the bigger particle size also leads to stronger microstructures thus enhances the magnetorheological response of MRGs.