The magnetic properties and the microstructures of the Mn-Ir/Ni-Fe multilayers with various stacking structures and buffer layer materials have been investigated. The (111) texture of Mn-Ir/Ni-Fe was observed in the top structures with Ta, Zr, or Ti buffer materials. However, all Mn-Ir/Ni-Fe multilayers with top structures exhibit high $H_{ex}$, regardless of the (111) preferred orientation of Mn-Ir film. The samples whose high $H_{ex}$ observed grain-to-grain epitaxial tendency and the large grain of Mn-Ir film at the interface. It can be explained that the $H_{ex}$ does not depend on the (111) texture of the Mn-Ir film and the interface roughness, but depends on the grain size of the Mn-Ir film and the morphology of the interface between the Mn-Ir and the Ni-Fe grains, and the $H_c$ depends on the interface roughness between the Mn-Ir and the Ni-Fe films.