Abstract: In response to the goal of building a modern smart distribution network by State Grid Corporation of China, ensure the safe and reliable operation of 10 kV distribution lines,this article analysis the influencing factors and new treatment schemes for fault tripping of 10 kV distribution lines. Starting from analyzing the influencing factors of line fault tripping, including external force, equipment body, user fault and environmental factors impact. Explained the decrease in our unit for fault tripping of 10 kV distribution lines.