Abstract: In recent years,as a kind of very potential application value of the new type of magnetostrictive materials, Fe-Ga alloy caused the people’s extensive concern due to its excellent comprehensive performance. In this paper,the effects of alloy elements such as Ga,Be,Co,C,Ni, Mo, Sn,Al,the microstructure and magnetic domains of Fe-Ga alloys on the properties of Fe-Ga alloys were reviewed. The development of application of Fe-Ga alloys on miniaturized devices are discussed.