In this study, Bi2O3-CuBiS2/g-C3N4 nanocomposite was prepared by a facile and hydrothermal method with 2D g-C3N4 nanosheets (CN). The anocomposite was charactrized by XRD and SEM analysis. The photocatalytic performance of nanocomposie was evaluated in the degradation of tetracycline under visible light irradiation. Also, there is no observed the change in the performance after five cycles.