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A novel FeVO 4 /g-C 3 N 4 composite photocatalyst was synthesized via a simple mixing-calcination method and characterized by various techniques including Brunauer-Emmett-Teller method, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, UVvis diffuse reflectance spectroscopy, photoluminescence spectroscopy, and an electrochemical method. The photocatalytic activity was evaluated by degradation of rhodamine B (RhB). Results indicated that 10 FeVO 4 /g-C 3 N 4 composite exhibited a much higher photocatalytic activity than pure g-C 3 N 4 under visible light illumination. The rate constant of RhB degradation for the optimal FeVO 4 /g-C 3 N 4 composite (5.0%FeVO 4 /g-C 3 N 4 ) is approximately 2.2 times that of pure g-C 3 N 4 . The formation of a heterojunction structure between FeVO 4 and g-C 3 N 4 which efficiently promoted the separation of electron-hole pairs was believed to be origin of the enhanced photoactivity.