Cadmium oxide film is synthesized via solvothermal method which benefits from simple low temperature technique. A uniform and crack free film of CdO is coated on a glass substrate. The synthesized film is annealed at 350° C for 1 hour in order to produce pure phase of CdO with good adherence. Films are characterized by X-ray diffraction, scanning electron microscopy (SEM), thermogravimetric (TGA) - differential thermal (DTA) analysis, Fourier Transform Infrared (FT-IR) and Photoluminesence (PL) spectroscopy. Grain size of the annealed film is proved to be about 30-100 nm. Band gap was also calculated using UV-Visible spectroscopy.