Due to its appropriate bandgap(～2.4 eV)and efficient light absorption,bismuth vanadate(BiVO4)shows promising photocatalysis activity.However,the charge carrier recombination and poorelectron transmis-sion often induce poor photocatalytic performance.Herein,we report a new method to in-situ synthesize non-noble metal Bi decorated mulberry-like BiVO4 by a two-step calcination process.Comprehensive characterizations reveal that non-noble metal Bi nanoparticles grown in-situ on BiVO4 result in the red-shift of the absorbance edge,greatly extending the light absorption from the ultraviolet into the near-infrared region.The surface plasmon resonance excitation of Bi nanoparticles and synergetic effects between Bi and BiVO4 effectively improve the photocatalytic efficiency and promote the separation of photoinduced electron-hole pairs in mulberry-like BiVO4.Density functional theory(DFT)calculation results further verify that the electrons are transferred from Bi to BiVO4 and the formation of·OH radical in Bi/BiVO4 is attributed to the lower simulated free energy,which supports our experimental outcomes.This work provides a novel strategy to enhance light absorption and promote efficient solar utilization of photocatalysts for practical applications.