The bearing materials have important influence on the lubricating property, the operational reliability, the working life of water lubricated bearings. Three kinds of slab materials, UHMWPE, Thordon and PTFE was chosen as the water lubricated bearing materials, and the influences on the mechanics property of water lubricated bearings by the combination order of three kinds slab materials, the thickness and the quantity of the slab material combination were studied. The results show that the mechanics property of three kinds of slab material combination is superior to the mechanics property of homogenous material. The mechanics property of water lubricated bearing is influenced separately by the different slab material combination order, the thickness and the quantity of the slab material combination.