Abstract: In order to analyze the geological characteristics of Sankeng geothermal field, so as to find out the best development position accurately, the geothermal exploration on a new working area of this field in Qingyuan City was conducted by using comprehensive methods. The exploration results show that the geothermal reservoir type of Sankeng geothermal field is karst fractured -fault zone. The underground hot water storage controlled by faults is complex with zonal distribution and has a clear direction and heterogeneity. Furthermore, the cover layer is not necessary among the four factors (heat source, reservoir, seal, channel and cover) in the geothermal systems. If the heat source, thermal channel and water resource are good, a geothermal water resources for economic exploitation may exist even without a cover layer or with a thin cover layer. Within 500 meters of shallow geothermal exploration, CSAMT supplemented by shallow hole temperature measuring can increase the success rate of exploration.