The structures are generally constructed on plain surface, but due to scarcity of plain ground in hilly regions leads to construction of building on a sloping ground. One of the biggest challenges of structural engineer is to design an earthquake resistant building on sloping ground. In present study conventional slab & flat slabs with RC building situated on sloping ground without any change of natural terrain have been considered for the analysis. The modeling & analysis of RC building has been done by using structure analysis tool ETABS 2019, to study the behavior of building for earthquake force. The equivalent static analysis and response spectrum analysis apply on building results were obtained in the form of maximum displacement, story drift, story shear, base shear, time period, axial force, shear force, bending moment.