Abstract: Using the dual continuum medium method,a comprehensive numerical model of buried pipe heat transfer is established. On this basis,we evaluate the applicability of this technology in the severe cold region of northern China. At the same time,the influencing factors and sustainability of its heat transfer are studied. The research results show that in the severe cold region of northern China,the heat transfer performance of the mid-deep buried tube heat exchange technology is excellent,and it has good applicability and sustainability. The increase of the circulating water flow,the buried pipe depth,the thermal conductivity of inner pipes or the thermal conductivity of backfill materials can improve the heat transfer power;of the buried pipe. However,the increase of circulating water inlet temperature,inner and outer pipe diameter ratio or inner pipe thermal conductivity will reduce the heat transfer effect.