Abstract: Tetrapod-like zinc oxide whisker (ZnOw) modified silicone rubber composites were prepared. The mechanical properties，thermal stability and damping properties of the composites were investigated. The fracture surface of the composites and the dispersion degree of ZnOw were observed by scanning electron microscopy (SEM). Results showed that the composites have decreased mechanical properties，but obviously increased thermal stability and damping properties with the increase in the amount of ZnO whisker. For the composite with 20 phr of ZnOw，the thermal decomposition temperature increased about 10℃，the damping factor maximum improved by 21% and the damping temperature range moved to higher temperature about 15℃ as compared with the pure silicone rubber.