There are tens of thousands of caves in Longxian County. According to the survey, there may be thousands to tens of thousands of caves in Longxian County, most of which are distributed in mountainous areas and rural areas of Longxian County. Most of these caves were built in ancient times, when people dug them to keep out the cold, farm and live. Nowadays, the caves in Longxian County have become a local characteristic landscape, which has also attracted many tourists to visit and travel. Cave culture is a relic of the development of farming culture in China, with strong traditional folk customs and local flavor. It is the source of accommodation civilization in northern China, and it is also a historical witness of the struggle between human beings and the natural environment.