The porous micro-/nanostructured Co3O4 microellipsoids are successfully fabricated through a urea-assisted solvothermal route using polyvinylpyrrolidone (PVP) as the capping reagent followed by thermal treatment in air. The porous characterization has been performed to confirm that porous Co3O4 micro-/nanostructures are composed of numerous primary nanocrystallines. The specific surface area and pore size of the Co3O4 microellipsoids are around ⿼24.2m2 g⿿1 and 13.5nm, respectively. The obtained porous Co3O4 microellipsoids demonstrate the high initial discharge capacity of ⿼1314 mAh g⿿1 with a Columbic efficiency of 79.2% at a current density of 50mA g⿿1 in the potential range of 0.01⿿3.0V. More impressively, a significantly improved reversible capacity of ⿼1192mAhg⿿1 is retained at 100mAg⿿1 after 50 discharge-charge cycles. Excellent rate capabilities (⿼920mAhg⿿1 at 200mAg⿿1 and ⿼630mAhg⿿1 at 600mAg⿿1) are observed for the porous microellipsoid-like structure. It should be noted that the unique porous micro-/nanostructured microellipsoids play an important role in the enhanced electrochemical lithium storage performance. Therefore, the porous micro-/nanostructured Co3O4 microellipsoids should be suitable as an anode material for lithium ion batteries.