BiPO₄ was synthesized with Bi(NO₃) ₃.5H₂O, Na₃PO₄.12 H₂O hybridized by g-C₃N₄, and the g-C₃N₄/BiPO₄ presents enhanced performance in the paper. The g-C₃N₄/BiPO₄ photocatalysts were characterized by XRD, FT-IR, SEM, TEM and BET. The photocatalytic activities were evaluated by the degradation of methylene blue under the visible light in the photocatalytic reaction device. TheSexperimentalSresults show that the visible light photocatalytic activity of BiPO₄ was greatly enhanced by the hybridization of g-C₃N₄. A loading amount of 7% g-C₃N₄ over BiPO₄ led to the most obvious increase of the photocatalytic activity under the visible light irradiation. Keywords: Composite photocatalysts; BiPO₄; g-C₃N₄; visible light