This paper carried out the screening of WO _x /SiO₂ catalyst carrier and the investigation of WO _x loading capacity, and successfully screened a domestic SiO₂ carrier with excellent performance. The structure and properties of the catalyst were characterized by nitrogen physical adsorption, XRD, Raman spectroscopy and TEM/EDS. The dispersion of WO _x species on the carrier was mainly investigated, the catalytic reaction performance of disproportionation of ethylene and butene to propylene was investigated, and the performance was compared with that of a foreign commercial catalyst. The research results show that the WO _x loading threshold of the domestic carrier S?SiO₂ is 8%. At this time, the catalyst shows the best catalytic activity and selectivity. Compared with the catalytic performance of the comparative commercial catalyst, the catalyst activity is nearly 10% higher, and the stability and selectivity are equivalent, and the correlation structure characterization results can confirm that the dispersion characteristics of WO _x species on the support are the key factors that affect the catalytic performance, while the SiO₂ support and loading are both the key to the dispersion state of WO _x species. This study can provide a basis for the localization of WO _x /SiO₂ catalysts for high?efficiency olefin disproportionation reactions, especially the selection of domestic SiO₂ carriers.