Abstract: In live working construction of distribution networks, EVA-type insulating blankets currently dominate the market. However, such blankets are prone to wear and scratching and have poor heat resistance, leading to performance degradation and shortened service life. This paper develops a new type of 10 kV live working insulating blanket featuring a high-temperature resistance of 125 ℃ and a puncture resistance of ≥80 N. By using new materials as the outer and inner layers, and forming the blanket through high-frequency welding, the new insulating blanket retains the soft, lightweight, and easy-to-fold and wrap properties of EVA-type blankets, while simultaneously gaining enhanced performance in strength, puncture resistance, and high-temperature operation. This reduces product wear during use, extends its service life, decreases replacement costs, and saves costs.