Baiyun Karst Caverns in Lincheng County, Hebei Province, is a rare karst caverns in subhumid climate region of the north. It was developed in carbonatite strata, particularly in Zhangxia formation of the Middle Cambrain series. Erosion-corrosion landscape and chemical deposition landscape are abundant, They are various shapes, curtain drapery, cave flag, cave shield, stalactite, stalagmite, cave flowers, botryoid, soda straw are developed, especially heligmite, soda straw, cave flowers are the most characteristic.