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Water-lubricated compound rubber bearings make use of new engineering complex material to replace precious metal as frictional pairs,natural water to replace mineral oil as lubricant.They realize energy conservation and environmental friendly and can be widely applied in many engineering field such as shipping,machinery,petroleum industry,chemical industry,water conservancy,agriculture mining,etc..In this paper,material modification of water-lubricated bearing was studied,including the influence of reinforcing agent,soft agent,vulcanized agent,fiberglass,carbon fiber and nanometer zinc oxide whisker on tensile strength,tear strength,stretching stress and hardness.Experimental research,in which friction coefficient acts as performance index,was operated for different thickness,hardness and filler content of compound rubber.Effect of surface deformation and filler content on lubricating property of water-lubricated compound bearing was explored sufficiently.The experimental results indicate that friction coefficient decreases with increasing thickness of compound rubber; friction coefficient has augment trend with increasing hardness of compound rubber; friction coefficient has decrease trend when filler content increases.The work offers theoretical argument for technological design and practical application of compound rubber bearing.