Inner Mongolia Pacific Mining Co.,Ltd.is a typical super large-scale,low-grade gold mine and uses heap leaching for production.The mine sits in highly cold region,so the leaching solution is prone to freezing and the production can not run as normal.With anti-freezing technology,including anti-freezing pregnant solution pool,leaching system,zonation of heap leaching cushion,the problem that the production can not run as normal because of frozen leaching solution in winter is solved effectively,which is exemplary for development and production of gold mine resources in highly cold region.