Tuned liquid damper （TLD） is a common type of passive damper system in high-rise buildingsl. However， the damping of a pure water TLD system is relatively small. Adding internal baffles can significantly increase its damping ratio， thereby improv ing its vibration control efficiency. In this study， a numerical simulation of liquid sloshing in a TLD system with vertical baffles is conducted using the open-source computational fluid dynamics （CFD） software OpenFOAM. The wind-induced response of the benchmark building for the third-generation wind-induced vibration control study is investigated using the computational structure dynamics （CSD） method. On this basis， the CFD/CSD coupling numerical simulation is conducted to evaluate the control efficien cy on wind-induced vibration control of a tall building and a TLD system with built-in vertical baffles. The CFD/CSD coupling nu merical simulation results show that the TLD system with three vertical baffles has a significant control effect on the wind-induced response of the benchmark building under dynamic wind loading with different return periods. The comparison with real-time hy brid test results also confirms that the proposed numerical algorithm in this paper has sufficient accuracy in estimating the wind-in duced control efficiency.