In this research, praseodymium oxide nanostructure was fabricated by a novel and easy wet chemistry approach. The role of some synthesis factors was evaluated to attain optimum condition. Results of this study display that particle morphology and size of the praseodymium oxide could be appreciably influenced by these factors. The as-synthesized praseodymium oxide nanostructure were characterized via FT-IR, FESEM, and XRD. Based on the obtained results, it was observed that with the help of this novel approach may be produced homogeneous praseodymium oxide nanostructure. The photocatalyst ability of as-fabricated praseodymium oxide nanostructure was also examined through elimination of the toxic organic contaminant under UV light.