Yungang Caves,which was originally built during the Northern Wei Dynasty in Datong, Shanxi Province,is known as world famous Treasure of Chinese Culture and Art.However,recently a large amount of industrial dust has attached into the surfice of the stone,which distroyed the Buddha statues.So we should take actions to protect the Buddha statues. Factories which seriously polluted the environment should be moved away .Moreover,local government can protect the Buddha statues with a glass wall to keep it new.