Abstract: This article briefly described the theoretical basis for the development of early warning technology of the stope roof disaster.Three types of real-time monitoring and early warning systems, including the over-front section, stope support and goaf were summarized.It systematically reviewed the station deployment and early warning principles of various online monitoring and early warning systems, such as rockbolt support mine pressure in roadway, borehole stress, electromagnetic radiation, micro - current, microseism/ground sound, stope support resistance, and goaf wind pressure, etc.On this basis, this paper pointed out the shortcomings of the current real-time monitoring and early warning system of coal mine stope roof, and prospects the further fusion development and systematic application of the real-time monitoring and early warning system of stope roof: multi-source information fusion and early warning of stope roof disaster based on various online monitoring systems, which realize a systematic management of mine disaster early warning system.Based on a comprehensive analyses of the technical availability of various online monitoring and early warning systems, this article pointed out the direction for the further development of the real - time early warning system of stope roof disasters.