Based on a general description of the Ningwu Ice Cave National Geopark, this paper summarizes and classifies the development of geological heritage resource in the park and generalizes the typical and unique geological heritage resource of Ningwu Ice Cave in the aspects of geomorphologic features, the development of the ice cave and the genesis. On such a basis, this paper make a comparative study of more than ten ice caves found in China and abroad, and points out that, with its largest scale, the largest amount of ice and the possibility of direct observation of the ancient ice formed during the geological period among all known caves in the middle latitudes of mountains, the Ningwu Ice Cave can be regarded as the best preserved area of such geological phenomenon.