From the perspective of applied chemistry, if the Egypt Beige granite cannot be influenced by wateriness, keep away from saline-alkaline, no more larger force power, no chamgeable temperature, generally appears afore-mentioned problems. The vividness, elegance, brightness of Egypt Beige granite, these decorative feature can be fully represented. But, if use the wet cement mortar to besmear on the wall or the floor of bathroom, or the bottom has been installed heating equiment will lead afore-mentioned problems. The reason mainly from three aspects: one is the natural flaws, overmuch water and saline-alkaline, three is changeable temperature.