The Xihuashan tungsten deposit is a large vein-type deposit in Yanshanian granite. The fluid inclusions in nine groups of coexisting transparent minerals opaque minerals of the Xihuashan tungsten deposit were studied by using infrared microscopy and other related equipment. The data obtained show that characteristics of fluid inclusions in coexisting transparent and opaque minerals can be similar to or obviously different from each other. Generally, wolframite can effectively preserve primary inclusions, whereas primary inclusions have almost been destroyed in associated quartz. The inclusions observed should be mainly secondary inclusions or inclusions captured during late crystallization. In the authors’ opinion, the comparative research on fluid inclusions in coexisting transparent minerals and opaque minerals is important for the study of metal deposits.oft-com:office:office" />