In this study, Bi2MoO6 was modified using low-cost and conductive corn stalk biochar (BC) by hydrothermal method to synthesis Bi2MoO6/BC photocatalytic. Under visible light irradiation, about 93 % BPA can be removed in 75 min, with a kinetic rate constant approximately 7.9 times greater than that of pure Bi2MoO6. The characterization results show that Bi2MoO6/BC possesses a significant specific surface area, potentially attenuating the agglomeration of Bi2MoO6 through the presence of BC. Additionally, the photocatalytic exhibits high visible light absorption capacity and a low electron-hole recombination rate, which is the primary reason for the enhancement of its photocatalytic activity. In conclusion, this study presents a simple synthesis approach for Bi2MoO6/BC and provides a theoretical foundation for the utilization of biochar in photocatalytic water treatment.