The indirect Z-scheme ternary heterojunction photocatalyst (BiOI/Bi/Bi2WO6) was constructed by the sequential hydro-solvothermal method for enhance photocatalytic performance. The results demonstrated that under visible light, BIOBWO-21 manifested a significantly photocatalytic activity for the degradation of Bisphenol A (BPA). The reaction rate constant k value was 32.4 × 10-4 which was 10 times that of Bi2WO6 and 54 times that of BiOIO3. The main reason of the enhanced photocatalytic effect in BPA degradation was that the plasmonicbismuth (Bi) and BiOI deriving from BiOIO3 splitting in ethylene glycol together modified Bi2WO6 to construct indirect Z-scheme ternary heterostructure. These led to an increase in visible light absorption and accelerated efficiency of photogenerated electron-hole separation. A possible indirect Z-scheme heterojunction reaction mechanism was proposed based on the active species detection, electron spin resonance test, and band structures.