Abstract: Open pit mining is the main form of mineral resource development. With the continuous expansion of mining depth and scope， the stability and safety management of high and steep slopes in open-pit mines have become increasingly prominent， and have become a bottleneck problem that urgently needs to be solved to restrict the safe and efficient development of mineral resources. Traditional slope monitoring and early warning are difficult to meet the practical needs of real-time dynamics， precision， efficiency， and rapid response. Advanced technologies such as digitization and intelligence have become strategic choices to lead the long-term safe operation of mines. Scientific and effective monitoring is an important prerequisite for timely warning and active prevention of landslide disasters. Based on the understanding of landslide mechanisms and damage processes， this paper systematically summarizes the latest equipment and technological progress in intelligent perception and monitoring of high and steep slopes in open-pit mines， sorts out and summarizes cutting-edge technologies such as three-dimensional fine characterization and visualization of slopes， and comprehensively analyzes the current status of key technologies such as slope stability risk assessment and warning systems. Identify the problems and development trends in intelligent perception and early warning of open-pit mine slopes， and accelerate the construction of an intelligent perception and monitoring system that integrates multi-source information data， continuously improving digital technology and equipment; Integrating cutting-edge technologies such as digital twins and machine learning to achieve transparent real-time analysis and feedback of slope information， accurately predicting potential risks of slopes; Build a disaster intelligent monitoring and early warning platform with global perception， collaborative early warning， and intelligent emergency response， to help achieve comprehensive and three-dimensional real-time dynamic safety protection for mining slopes. Finally, corresponding countermeasures were proposed to address the technical bottlenecks in the monitoring and early warning research of slope disasters, in order to provide new thinking paradigms and technical guidance for the scientific, precise prevention and sustainable development of slope disasters in high and steep open-pit mines in China.