The monodisperse Co3O4 mesoporous microdisks have been successfully prepared through a facile solvothermal synthesis method and subsequent heating treatment. The Co3O4 microdisks are polycrystalline, and have an average diameter of around 2μm with an thickness of 300nm. The specific surface area of Co3O4 mesoporous microdisks is about 108.9m2 g−1 with a narrow pore size distribution centered at round 9.68nm. The as-prepared Co3O4 mesoporous microdisks as anode material in lithium ion batteries exhibit a stable specific discharge–charge capacity of 765 and 749mAhg−1 after 30 cycles at a current density of 100mAg−1. The good electrochemical properties could be attributed to the unique mesoporous structure of Co3O4 materials.