Buildings that have changed in type of structural materials at altitude are hybrid buildings. Usually, in these buildings, the lower story are of a concrete type, and the upper story are of a metal type. This structural system has irregular mass, irregular stiffness, variable materials and variable damping in height. The codes do not provide seismic permisions, behavioral factors, and period of time for these types of structures, and only a few points are worthy of mention In this research, the nonlinear behavior of concrete, steel and hybrid structures is investigated using adaptive and modal pushover analysis. For this purpose, first 5,10,15 floor structures of all three concrete, steel and composite structures were designed according to the existing codes, and then nonlinear behavior was carried out with adaptive and modal pushover analysis. According to the results, in 5 story concrete structures and in 10,15 story steel structures had better performance