The deposition of Fe on the Ru(1010) surface has been studied by low-energy electron diffraction angle-resolved UPS and Auger Electron-Spectroscopy.Upon annealing,Fe overlayers on Ru(1010) formed (1×1) and P(2×1) structures.For Fe coverages more than 10ML,incommensurate layer of Fe with a fcc(111) face epitaxial structure is formed.For Fe overlayer at low coverages,the valence bands near Fermi level are similar to the clear surface,while for Fe overlayer at high coverages with the fcc(111) epitaxial structure,different energy band structures related to this epitaxial layer were observed.