In determining of bearing capacity of shallow foundations, for east in this procedure, it is assumed that the soil layers below the foundation is homogenous an extended to a great depth below the bottom of the foundation. In real situations where these assumptions are not true, they lead to different values in bearing capacity. In this paper, with considering a bedrock layer under a foundation, and by using modelling in PLAXIS software, the effect of slope in this hard layer has been studied. Modeling for different scenarios of width of the foundation, distance of bedrock layer from the center of the foundation and slope of this hard layer was applied. The results show that approximately, up to 40 degrees in slope, an increase in the values of the ultimate bearing capacity of shallow foundations can be seen.