Abstract: With the advancement of intelligent development in power systems, UAV inspection has become an important means for the operation and maintenance of transmission lines. However, ensuring the safety and efficiency of UAV inspection paths in complex electric field environments remains a challenge. This paper proposes a UAV path planning method based on electric field information by modeling transmission lines as a point charge distribution and calculating the spatial electric field distribution. By constructing an objective function that integrates constraints on path length, smoothness, and electric field strength, the method effectively avoids hazardous electric field areas. Simulation experiments show that the proposed method can generate smooth, safe, and efficient inspection paths, providing theoretical support and technical assurance for UAV applications in transmission line inspection.