he north slope of Chenjiazhuang uplift locates at the margin of the basin with widely distributed stratigraphic overlap traps.The oil source condition and reservoir-seal combinations are favorable for the formation of stratigraphic reservoirs. According to previous studies, the floor condition is the main factor which determines the effectiveness of stratigraphic traps in this area. By comparative analyses of petrophysical properties of the fans and oil properties, the lateral blockage ability of the heavy oil rim of the fan bodies is firstly proposed, by which the floor condition of Pretertiary is weakened and the exploration strategy of viscous crude oil stratigraphic reservoir is broaden. According to the quantitative analysis of the key elements of the reservoir, the key of exploration has been pointed out and the exploration process of viscous crude oil stratigraphic reservoir should be expected in this area.