Abstract: In order to tackle the problem arising from the existence of isolated information islands between the individual application systems in coal preparation plant,and to cater to the specific needs of plant operation management,a study is made on the realization of seamless connection between operation control system and equipment life cycle management system using OPC real-time data exchange technology.It is aimed to construct an information management and integration platform formed up by real-time database and comprehensive information platform,for effecting unified management of data integration and application systems.