The enhancement of the Faraday rotation is achieved by the following methods. 1) The Faraday rotation is enhanced approximately twofold by fabricating thin films containing fine iron particles, compared with continuous iron films. 2) After fabricating periodical groove structures on transparent substrates, thin films containing fine iron particles are deposited on the substrates using the evaporation method in gases. A large Faraday rotation about 60 times larger than that of continuous iron films with the same thickness is obtained. In the second case, a light intensity dependence is found.