The CuInTe2 thin films were prepared by thermal vacuum evaporation from a single source. The effects of heat treatment on both structural an optical properties of CuInTe2 films were studied. X-ray diffraction studies reveal that the films prepared by the present method showed formation of single phase CuInTe2 at heating treatment temperature higher than 300 degrees C. The calculated lattice constants for CuInTe2 films annealed at 300 degrees C were found to be a = 6.21 Angstrom and c = 12.35 Angstrom. The value of the grain size obtained in these films was of the order of 50 nm. The value of optical energy gap (0.97 eV) and the dispersive refractive index n(lambda) for CuInTe2 film annealed at 300 degrees C were evaluated by optical absorption measurement.