Galloping is the main factor affecting the safety operation of transmission lines in winter.Aiming at the serious damage problems caused by conductor galloping,a series of researches were carried out on the full-scale galloping test line in Henan Jianshan,with consideration of damage characteristics and the cause of the damage,to find the bearing weakness parts of the spacers.On the basis of this,this research initially starting from the general technical requirements of the spacers and the special requirements of the galloping area,optimized the connection pad limit of the butterfly damping rubber,the design of double-frame plate and the selection of aluminum alloy materials.A new type of anti-galloping spacer utilized in 500kV transmission lines was developed.The ultimate bearing test of the spacers has showed that,comparing with current double-frame type spacers,the new type spacers grip strength increased by 28%,the pull pressure load increased by 114%,the centripetal load increased over 44% and the overall bearing ability increased by 22%,as such the overall mechanical performance has been greatly improved,and the special spacer is widely used in 500kV lines in Henan,and has a good application effect.