Abstract: Mountain substation has complex geological and climate environment, resulting in that common geological hazards often occur. A scheme of mountainous substations slope security risk based on remote monitoring is presented in this paper. The principle of mountainous substations slope sensing is analyzed, architecture of optical fiber sensing network in mountainous substations is given, the remote monitoring system is researched, and the unified information platform is developed. The slope information of the mountain substation is monitored by the optical fiber sensor set in the slope of the slope of the mountain substation, and the real-time monitoring and processing analysis is carried out based on the unified information platform of the power network transmission to the substation main station. The field test results show that the technology can monitor the slope information parameters of the mountain substation in real time and accurately, which proves the effectiveness and feasibility of the system, and provides a guarantee for further research and extension.