Abstract:The strenuous movement of the Crust in the Mesozoic and Cenozoic periods divided the Jiaodong Peninsula into three major tectonic units: Jiaobei uplift, Jiaolai depression, and Jiaonan-Weihai uplift. The uplift area is widely distributed with granite and metamorphic rocks, and the depression area mainly distributes sedimentary sandstone. The Jiaobei uplift area and the Weihai uplift area have higher heat flow values than the Jiaolai depression area. In order to systematically analyze the distribution characteristics and mechanism of heat flow in Jiaodong Peninsula, this paper analyzes the tectonic-thermal development history, geothermal geological background, geothermal field distribution, rock thermal conductivity, borehole lithology and temperature data, chemical composition of geothermal fluid et al in Jiaodong Peninsula. It finds that the geothermal resources in Jiaodong Peninsula are all medium-low temperature convective geothermal resources of fault control type, its heat sources mainly come from: hydrothermal convection in fault zones; terrestrial heat flow and conduction – convection in groundwater transport. Faults distribution, thermal properties of rocks, geothermal reservoir distribution, groundwater activities, etc. are the main factors affecting the distribution of thermal field. Aiming at the thermal field characteristics and its controlling factors, a conceptual model of heat flow diversion-acculturation between uplift and depression in Jiaodong peninsula are proposed. The lithology of the uplift area is mainly composed of intrusive rocks and metamorphic rocks with high thermal conductivity. The lithology of the depression basin is mainly composed of sandstone with low thermal conductivity. The bottom of the depression with low thermal conductivity and low permeability is more like a heat insulation and water insulation roof, which causes the heat flow or the heat-carrying fluids and gases from the deep crust to be refracted and redistributed at the bottom of the depression area. As a result, the bottom of the uplift areas has higher heat flow. Especially the axial position of uplift area has the highest heat flow. The distribution pattern of high heat flow value is almost the same to the faults strike to NE and NNE direction. This model can better provide exploration direction for geothermal resource exploration in Jiaodong area.