An electrode material for a lithium secondary battery which includes particles each having a central portion and a surface portion covering the surface of the central portion. The central portion occupies 80 to 99% of a distance from a center to an outermost surface of the particle and the surface portion occupies 20 to 1% of the distance. The central portion includes LiM.sub.1-aD.sub.aO.sub.2 (M represents Co or Ni, D represents a transition metal element or Al replacing a part of Co or Ni as M, and M is not the same as D) having an .alpha.-NaFeO.sub.2 structure. The surface portion includes LiM.sub.1-bE.sub.bO.sub.2 (M represents Co or Ni, E represents a metal element replacing a part of Co or Ni as M, and M is not the same as E) having an .alpha.-NaFeO.sub.2 structure. The content of element E in the central portion satisfies the relation of E/(M+D+E)<0.05 in terms of an atomic ratio, and the content of element D in the surface portion satisfies the relation of D/(M+D+E)<0.05 in terms of an atomic ratio.