Precipitation method has been used as an efficient technique to synthesize Co3O4 at low temperature. The prepared products were characterized by thermal analysis (TGA-DTA), powder X-ray diffraction (XRD), Fourier transformer Infrared spectroscopy (FTIR), Scanning electron microscope (SEM) and UV-Visible diffuse reflectance spectroscopy (DRS). X-ray diffraction pattern confirmed the formation of single phase Co3O4. SEM images indicates the obtained samples are micro porous sphere like morphology and its grain size will be in the range of 100-300nm. Optical properties of Co3O4 ceramic shows an energy band gap as 3.50eV.