The safety of transmission lines is affected significantly by wind deflection characteristics. In the present study, the effect of transmission lines arrangement on wind deflection characteristics is investigated, where the distance between transmission lines is different. At low Re, the effect of the distance between transmission lines on C_Drag and C_Lift is significant. C_Drag of the left two transmission lines are the same, which are larger, while C_Drag of the right two transmission lines are smaller. C_Lift of the top two transmission lines are larger, while C_Lift of the bottom two transmission lines are smaller. With the distance between the transmission lines increasing, the interaction between the transmission lines becomes weak, both C_Drag and C_Lift of the four transmission lines approach to those of the single transmission line.