Abstract: Wind-induced static torsional angle has significant influence on the results of sectional model test. To accomplish accurate flutter analysis, wind-induced static torsional angle should be adjusted in sectional model test. An attack angle control facility was used to eliminate static wind induced additional attack angle. A comparison of test results before and after the attack angle adjustment based on the Xiang Shan Gang Bridge shows that static wind induced additional attack angle has influence on aerodynamic tortional damping ratio, aerodynamic derivatives related to torsional movement and critical wind speed. Before the adjustment, the wind induced additional attack angle on the sectional modal under critical wind speed was 0.32°at 3°initial attack angle. After the adjustment, the critical wind speed increased by 7%.