Late Cenozoic strata is the basis of studying the regional hydrogeology and neotectonic activity,and is also the basis of analyzing tectonic movement and climate change under the action of basin-mountain coupling. The northern coast of the Bohai Bay is located in the Nanpu Sag, northern Huanghua Depression, where Cenozoic deposits are over 6000m. The area is mainly composed of the Luanhe River delta and alluvial fans of different periods. The BG10 borehole is located in Caofeidian (39°10'09"N, 118°33'24"E; 2.5m a.s.l.),and has a length of 600m. In this paper, based on spontaneouspotential,apparent resistivity, resistivity, natural gamma-ray logging, sound wave and other logs, combined with grain size characteristics, stratigraphic sequence of the BG10 borehole have been divided into six stratigraphic units, and its times of these units have been dated by detailed magnetostratigraphic chronology. From bottom to up, six stratigraphic units have been then identified:(1) Unit I whose age is 2.9~3.6Ma,with the depth of 513.5 ~600.0m has been dominated by lacustrine facies, flood plain and fluvial facies; (2) Unit II whose age is 1.5 ~2.9Ma, with the depth of 346.8 ~513.5m has been dominated by interaction deposition of flood plain and lacustrine facies; (3) Unit III whose age is 1.4 ~1.5Ma,with the depth of 274.0~346.8m has been dominated by meander sedimentary and braided channel facies; (4) Unit IV whose age is 0.78~1.40Ma, with the depth of 161.2 ~274.0m has been dominated by two series of lacustrine facies interbedded spit formed by sea-land interaction; (5) Unit V whose age is 0.20 ~0.78Ma,with the depth of 122.4 ~161.2m has been dominated by meander sedimentary facies; (6) Unit VI whose age is 0 ~0.2Ma, with the depth of 4.5 ~ 122.4m has been dominated by lacustrine facies and marine facies. There were good corresponding relationships between units I,III, the upper part of IV and tectonic activities. During the periods,under the action of tectonic activities the structural differentiation of mountain and basin had been reinforced, and formed the huge accumulational space, so sedimentation flux and grain size had been increased, and the filling model had been developed. The unit II dominated by interaction deposition of flood plain and lacustrine facies formed under the dry and wet climatic change. The lower part of unit IV and the unit V dominated by the fine-grain sediment sequences had good corresponding relationships with climate changes. The unit VI dominated by lacustrine facies and marine facies formed by interaction of tectonic activities and climate changes (sea-level changes). Impacted by transgression, in the depth of 4.5~ 73.9m the values of acoustic wave and natural Gamma-ray has significantly increased, the values and ranges of electrical resistivity has been lower, and the values of apparent resistivity ware also gradually became smaller, while the values of spontaneous potential were gradually increased accordingly.