Abstract: Tai-Lai Mesozoic-Cenozoic downfaulted basin and its around region,in the movement and evolvement of the earth's crust for long time,the form of the geothermal resources are not only ready for good stored geothermal terrane and the cover of heat preservation,but also produce NW,NEE,SN,NNE-the four-group faults caused by difference movement.Fault mechanics properties,deep structure properties,fault inheritance and palingenetice properties,are determined by remote sensing imagines processing,gravity,aero-magntic data processing,analyzing microstructure of tectonic rock,and exploring new active faults,for this makes it possible to increase temperature of cycling underground water.The paper states the four elements of storage,cover,roution,and origin for forming geothermal by the large amount of actual data,it proves that Tai-lai downfaulted basin contains rich geothermal resources,and so it further provides evidences for us to explore and develop geothermal resources of Taian.