Abstract: In view of problems that integrated automation system of Qianjiaying Coal Mine has only function of information integration, bad server configuration, and cannot realize intelligent dispatching and centralized monitoring, the paper proposed reform principle of the system, introduced reform and implementation of ring net, dispatching center and software platform of the system in details. The reformed system was not only pay attention to information collection and processing, but also pay great attention to integrated information processing and union monitoring and control of production and safety automation system, which realizes five fusions of mine integrated automation system.