By study the micro-behavior of groundwater of active fractural zone in representative Cenozoic, groundwater yield property and geotherm geologic condtion, the basic features of groundwater micro-behavior are summarized, the good correlation between groundwater, geothermal liquid and groundwater level micro- behavior on the fractural zone in Cenozoic is pointed out. Finally, the micro-behavior is thought to be the tar- get for groundwater source and geothermal liquid on this kind of fractural zone.