The key points of intelligent manufacturing are to speed up the interconnection of manufacturing equipment, improve the digitization and networking of equipment, realize realtime transmission of information, ubiquitous perception of equipment and rapid analysis and processing of data.Based on the general framework of industrial equipment on cloud, the key technologies such as industrial data collection and analysis technology, heterogeneous network fusion technology, edge computing and network security in the industrial equipment on cloud were analyzed. The problems existed in the equipment on cloud were pointed out and the future research direction was prospected