Objectives: Jiaodong Peninsula is quite rich in low—medium geothermal resources. However, due to the lack of mature theory, there are a large number of "hot but no water" or "water without heat" in the process of geothermal drilling. How to accurately find geothermal resources is still a big problem.Methods: This paper comprehensively analyzed the mechanisms of geothermal resources in Jiaodong Peninsula on the basis of ① geothermal geological survey, ② heat controlled and water conducted structural analysis, ③ temperature measurement, and ④ previous drilling data analysis of 15 geothermal fields. Besides, 12 artificial geothermal deep wells were used to test our hypothesis.Results and Conclusions: Based on the above analysis, we concluded that the geothermal resources in Jiaodong Peninsula are mainly distributed in the “V” shape area where the upper plates of the NE- and NW- trending faults intersect. The geothermal reservoir is controlled by the NE- and NW- trending faults and has an irregular columnar shape. Its geo- temperature field is also controlled by the geothermal fluid flow field and the geothermal reservoir morphology, that the distribution is “Π” type. According to these conclusions, we proposed a “V” type structural control and thermal conductivity model, and clarify the mechanism of deep geothermal resources in Jiaodong area. Our work provides theoretical basis for the exploration of the deep geothermal resources in Jiaodong Peninsula.