<p>V<sub>2</sub>O<sub>5</sub>-WO<sub>3</sub>/TiO<sub>2 </sub>catalysts were fabricated by a simple impregnation method. Effects of V<sub>2</sub>O<sub>5</sub> and WO<sub>3</sub> loadings on the catalytic performance of V<sub>2</sub>O<sub>5</sub>-WO<sub>3</sub>/TiO<sub>2</sub> catalyst for selective catalytic reduction (SCR) of NO with NH<sub>3</sub> were investigated. Morphology and structure of the V<sub>2</sub>O<sub>5</sub>-WO<sub>3</sub>/TiO<sub>2 </sub>catalysts were characterised by XRD, SEM, XPS, and N<sub>2</sub> adsorption techniques. The XRD patterns of the V<sub>2</sub>O<sub>5</sub>-WO<sub>3</sub>/TiO<sub>2 </sub>catalyst are indexed to anatase-TiO<sub>2</sub>. XPS spectra analysis confirms that V, Ti, W and O species exist on the surface of V<sub>2</sub>O<sub>5</sub>-WO<sub>3</sub>/TiO<sub>2 </sub>catalyst. V<sub>2</sub>O<sub>5</sub> species are the main active sites in the process of SCR reaction. Increasing V<sub>2</sub>O<sub>5</sub> loading in the V<sub>2</sub>O<sub>5</sub>-WO<sub>3</sub>/TiO<sub>2 </sub>catalysts can improve their catalytic performance. Exceeding 2 wt%, the catalytic performance of V<sub>2</sub>O<sub>5</sub>-WO<sub>3</sub>/TiO<sub>2 </sub>catalyst begins to decline because high V<sub>2</sub>O<sub>5</sub> loading on TiO<sub>2</sub> speeds up the growth of anatase grains, which leads to the loss of catalytic activity. Appropriate WO<sub>3</sub> species can significantly improve the catalytic performance of V<sub>2</sub>O<sub>5</sub>-WO<sub>3</sub>/TiO<sub>2 </sub>catalysts. However, as the WO<sub>3 </sub>loadings reaches 6 wt%, NO conversion decreases instead.</p>