Climatic conditions, geological and mining characteristics of permafrost placers are described. The stages of development and features of their underground development are described. The issues of opening and preparation of mine fields, technology and mechanization of opening and preparatory workings, features of the manifestation of mining pressure, development systems and technology of cleaning excavation of frozen sands, issues of mine transport, lifting and dumping are considered. The experience of underground development of permafrost placers is summarized and factors affecting its effectiveness are analyzed. The prospects for the development of an underground method for the development of permafrost placers are highlighted. Designed for engineering and technical workers of production, employees of design and research organizations.