Abstract: BiVO₄ is regarded as a promising photoanode in the field of photoelectrochemical (PEC) field, but its photogenerated carrier separation with low mobility limits its further development and application. To overcome this challenge, a facile strategy was employed to successfully construct Ni(OH)₂/BiVO₄ photoanodes. Under simulated sunlight irradiation, the Ni(OH)₂/BiVO₄ photoanode exhibites a photocurrent density of 3.15 mA·cm⁻² at 1.23 V vs. RHE, which is about 2.3 times higher than that of the pure BiVO₄ photoanode (1.37 mA·cm⁻²). The photoanode also demonstrates an efficient degradation rate of 80.16% as well as excellent stability in the PEC degradation of tetracycline. Through testing and analysis of the structure and performance of Ni(OH)₂/BiVO₄ photoanode, we find that its excellent performance can be attributed to high efficiency of charge separation. Furthermore, the Ni(OH)₂/BiVO₄ photoanode shows a broad application prospect in the field of PEC oxidation and degradation.