Electricity transmission towers inclination monitoring can monitor the inclination of Electricity transmission towerss in real time, understand the safe and reliable status of the operating towers in time, and provide timely pre-alarms for the inclination of Electricity transmission towerss that exceed the standard in a variety of ways according to the development trend of the inclination monitoring data, guide inspection and maintenance, and remind operation Maintenance personnel strengthen the foundation to prevent tower collapse accidents. The on-line monitoring system for the inclination of Electricity transmission towerss can effectively monitor all-weather on-line, real-time and real-time Electricity transmission towerss in operation of high-voltage transmission lines. It mainly includes two parts: the tower inclination monitoring device and the background comprehensive analysis software. The system measures and reports the various status variables of the line tower inclination transmission line, and transmits the data to the background comprehensive analysis software system through 3G/GPRS/CDMA communication methods. Analysis and decision-making can accurately reflect the current status of the transmission line, so that the power system operation and management personnel can grasp the actual situation of the line operation, and help them to make decisions and safety assessments, which is of great significance to preventing grid accidents.