Chitosan is a natural polysaccharide polymer which is non-toxic, biodegradable, cationic and biocompatible. Present work study physical and chemical characteristics of pure chitosan thin film and other samples that modified through embedding different concentration of silver vanadate nanorods prepared via solution casting route. Casting route was employed for preparation of chitosan thin films and other sample containing gradient increase of synthesized silver vanadate nanorods.The optical properties have been investigated through ultraviolet–visible (UV/Vis) optical absorption spectroscopy. Experimental data reveals an observable decrease in the values of optical energy gap with increasing content of silver vanadate nanorods which result in enhancement of the sensitivity for all prepared thin films.