Abstract: The polished surfaces of granite would become slipper in contact with waterThe reaction between a colorless, odorless, water-soluble composite organic-silicon compound and the polished surface of granite would improve the anti-skid property and increase friction without changing the polished surface of graniteBecause of its low surface tension and surface energy, various waterproof agents can be made from the composite organic-silicon compoundComposite organic-silicon waterproof agents can form a waterproof film by reacting with the granite surfaceWith the change of granite surface property such as wetting, counter freezing, electrical property and micro-appearance, the friction force of granite surface also changed.