In the existing research methods for determining the ultimate bearing capacity of foundation near Slope, the vertical uniform force instead of embedded depth of foundation was adopted，which did not consider the contribution of the soil shear strength in depth enough. In view of the problems, the Meyerhof Theory was introduced. First of all, based on the engineering characteristics of strip footing, the failure mechanism of strip footing near slope was thoroughly analyzed. Meanwhile, the new unilateral sliding failure mode considering the soil shear strength in the strip footing embedded depth of foundation adjacent to slope was established for further in-depth study of the method for determining the bearing capacity of strip footing near slope. Then, on the basis of the failure mode, the ultimate bearing capacity analysis model of strip footing adjacent to slope was derived in the rigid body limit equilibrium analysis method, based on the Meyerhof theory to solve the impact of the soil shear strength in depth. The method reflects not only the soil shear strength in depth, the distance effect from the top of the slope, different embedment depth on both sides of the footing, but also the friction effect between the wall of strip footing and the soil in depth. The simplified calculation formula is simpler and engineering applicative, compared with the existing research results. Finally, the feasibility and rationality of the proposed approach were shown through an engineering example calculation and comparison with current research results.