Nickel-ferrite Ni_xFe_3-xO₄ thin film was fabricated by ferrite plating method in order to make sunglass which intercept ultraviolet ray and electromagnetic field. The transmittance of nickel-ferrite Ni_xFe_3-xO₄ thin film is down clearly below 400 nm. And it shows that the nickel-ferrite thin film of x=0.09 in nickel composition rate was intercepted ultraviolet ray. We expect that sunglass coated with Ni_xFe_3-xO₄ thin film will use for interception of ultraviolet ray and electromagnetic field.