To provide a Mn positive electrode material having the superior charging cycle characteristic for properly keeping the initial capacity and maintaining a high charging rate, and to provide a lithium secondary battery using the positive electrode material

In this granular positive electrode active material for a lithium secondary battery, represented by a chemical formula of Li1+x(Mn2-x)O4 0≤x≤0.20), the surface of the positive electrode active material is coated with conductive carbon.