Abstract: As the wind loads affect greatly on the monitoring accuracy of the transmission line icing, it is necessary to study the wind loads of the conductors under different ice shapes. In this paper, by summarizing six typical ice shapes of the lines, the aerodynamic drag coefficients of the conductors under each of the ice-covered shapes are obtained by means of the computational fluid dynamics. The influence of the ice shapes, the torsion angles and the icing types on the wind loads of the conductors in the icing development process is studied. The icing increase coefficients of different ice shapes under each of the meteorological ice areas are calculated and compared with the current norms, giving the value suggestions. The results show that the aerodynamic drag coefficients of each of the ice shapes are affected by the ice thicknesses, the torsion angles, and the wind speeds. The ice-covered drag coefficients of the crescent- and the fan-shaped types are greatly affected by the above three factors, the D-shaped and the ellipse types are mainly affected by the torsion angles, while the circular icing is less affected by the three; The crescent and the elliptical wind loads reach the maximum when the torsion angle is 90°, and the minimum at 0°. The fan-shaped and the D-shaped wind loads reach the maximum at the torsion angle of 0°, and the minimum at 60° and 90°. The wind load of the mixed icing is greater than that of the glaze icing; The wind load of the transmission line reaches the maximum when the ice-covered shape is crescent and ellipse and the torsion angle is 90°; For every meteorological region, the design of the transmission lines using the value of the icing increase coefficient in the current code will cause risks or hidden dangers in the case of partial icing. For most ordinary lines, it is recommended to combine the main ice shapes in different ice regions and the torsion of different line types, and comprehensively consider the economy and safety to select the coefficient. For important hub lines, it is necessary to ensure the safe operation under any icing conditions with the recommended value as 3.5~3.6.