Abstract: To address safety incidents caused by improper selection of hanging points in high-altitude power transmission and transformation operations, this study proposes an integrated safety monitoring method combining 3D point cloud modeling with RTK (Real-Time Kinematic) positioning. The system constructs digital tower models through LiDAR scanning, automatically delineates safe hanging zones, and employs an RTK module for centimeter-level positioning. A 3D area matching algorithm enables real-time safety assessment. By integrating multi-source perception fusion technology and establishing a three-tiered early warning response mechanism, the system significantly enhances safety protection for high-altitude work.