The effects of Ni and N addition to 304 stainless steel on mechanical properties and microstructure were investigated within temperature ranged from -196℃ to 25℃. The addition of nickel and nitrogen induced the stability against the formation of provide significantly enhanced ductility at -196℃ and reduce the Md temperature. Fe-18Cr-10Ni-0.2N alloy showed the γphase in deformed structure which it was benefical to enhance the tensile strength and elongation at 25℃ and -196℃.