Abstract: Perovskite-type vanadium-doped titanium-bearing blast furnace slag (VTBBFS) photocatalyst was prepared by way of high-temperature solid phase method at 800°C with different time for heat-treatment and it was characterized by XRD, UV-vis absorption spectra and SEM. It was found that the VTBBFS photocatalyst is of perovskite type, and that there is no change found in the crystals structure and surface morphology of the photocatalysts because of different heat-treating time. But, the photoabsorbability of the photocatalyst is thus affected greatly, which enables the UV absorbability of the catalyst to be improved obviously with red shift found. Candida albicans was used as experimental bacterin to check the antifungal ability of VTBBFS photocatalyst. The results showed that VTBBFS photocatalyst has good resistance against Candida albicans if heat-treated for 2h, and its sterilizing rate will come up to 100% under common illumination with sustainable bacteriostasis provided.