Novel double-shelled CoMn2O4 hollow microcubes with nanometersized building blocks have been prepared by a facile co-precipitation and annealing method. In virtue of the unique structural features, the resultant CoMn2O4 hollow structures exhibit high specific capacity (similar to 830 mA h g(-1) at 200 mA g(-1)) and good cycling performance as an anode material for lithium-ion batteries.