Abstract: Aerodynamic characteristics of iced conductors were investigated by the wind tunnel test. Under the homogeneous turbulence of 5% intensity, aerodynamic force coefficients of single and bundle conductors were obtained at angles of attack between 0°～180°. The variation patterns of aerodynamic forces on the iced conductors with respect to wind angels of attack were systematically studied for the ice thickness of 025, 0.5, 0.75 and 1 times of the conductor diameter. The differences of aerodynamic force characteristics for single and bundle conductors were identified and discussed. Based on the Den Hartog and Nigol’s mechanisms of galloping, the ranges of attack sensitive to galloping were analyzed. The results show that lift and torsion force coefficients reach peak values at angles of attack between 15°～20°. For bundle conductors, lift force curve is agree with the curve of single conductor approximately. Drag force coefficients were smaller than those of single conductor at some wind angles. There are noticeably differences of torsion coefficients existed between bundle conductors and single conductor. According to two classical galloping mechanisms, wind angles of 15°～30° are critical for the galloping of iced conductors with crescent shapes.