Abstract: In view of the problems encountered in the mountainous area stringing construction of Yazhong—Jiangxi ± 800 kV UHV DC line project（Yun 3 bid section）,such as the suspension of pulley of double double double double line clamped tangent tower in 30 mm repeated ice area,the rise control of tension tower and the connection of reducing conductors in different ice areas,this paper makes a technical discussion and puts forward an optimization scheme. By analyzing the advantages and disadvantages of the existing schemes to solve the above problems in China,it is improved from the perspective of advanced technology,safety and reliability,economy and rationality. Considering the characteristics of double double double clamp linear tower in the ice covered area with little vertical load without ice during construction,the construction hole is added in the middle of LT type connecting plate above the double suspension connecting plate,and the single pulley is suspended by customized installation of PT-110 extension adjusting plate and shackle connected with a single suspension clamp,so as to solve the problem of cumbersome suspension process of conventional double pulley and unfavorable to sag control. In view of the safety risks existing in the current scheme of raising and pressing the rope of large angle tower in mountainous areas,a special triple plate is added at the front end of the paying off pulley,and the adjusting rope at the middle hole of the connecting plate and the inclination adjusting rope at the tail of the pulley are adjusted to the inclination angle of the raising rope through the hand block hoist,so that it can pass the pulley safely and smoothly. On the connection of mixed stringing of large cross-section conductors with different diameters,the method of crimping traction pipes at both ends is adopted in the important crossing section through analysis of advantages and disadvantages,and the method of installing net sleeve connectors along the conductors at the traction side and crimping traction pipes at the reverse traction side is adopted in the non important crossing section. Through the field practice,the application effect is summarized,and the precautions are put forward. The above optimization scheme has achieved good application effect in the project stringing construction,and is worth popularizing and applying in the follow-up UHV project mountain section construction.