Due to excellent structural and optical properties of molybdenum oxide (MoO, MoO2 and MoO3) were preferred in multiple applications such as gas sensing solar cell, optoelectronics devices and medical physics. The present study was related to synthesis of molybdenum oxide thin film via dip coating technique and the film was characterised by using various characterisation techniques such as XRD, SEM and UV-visible spectroscopy. The monoclinic crystal structure and the crystallite size (29.16~52.77) was investigated by XRD analysis. Moreover, SEM micrograph was used to identify the nano tubes in MoO3 thin film and UV-visible spectroscopy exhibit the maximum absorption in ultra-violet region and band gap decrease (3.05 to 2.55 eV) with increased the oxide radical in molybdenum thin film. The present results suggest that the series of molybdenum oxide (MoO, MoO2 and MoO3) improved the structural and optical properties which make it a good candidate for photocatalytic activity.