Based on introducing geological structure of Tanggu area��the authors analyzed the sedimentary envi- ronment of Paleogene Dongying Formation��and further analyzed its geothermal occurrence�� The studied area spans two grade �� tectonic units which are Beitang depression and Banqiao depression�� The studied area is mainly located in the Tanggu nose- like structure which is the secondary structure of Beitang depression�� Its ex- istence affects the sedimentary distribution of the part strata of Paleogene�� The depositions of Dongying �� (SQEd 3 ) and Dongying�� (SQEd 2 ) are mainly delta front facies and lake sand bars which are propitious to the geothermal fluid enrichment�� The favorable enrichment region of geothermal fluid is located in south Hetou- Tanggu�� Most of Dongying�� (SQEd 1 ) changes into swamp plain deposition�� only the northeast part of this area is the distributary riverway facies with developed sand layers�� There is the favorable enrichment region of geo- thermal fluid�� The hydraulic connection is weak among the geothermal reservoirs of Dongying Formation and its overlying Guantao and Minghuazhen formations�� The underlying Shahejie Formation geothermal reservoir pro- vides a steady stream of fluid supply and ground pressure protection for Dongying Formation geothermal reser- voir��