Abstract: Combining with practical application of integrated automation system in coal mine enterprises, types and characteristics of linkage control modes were concluded and classified, then linkage control mode of integrated automation system based on WCF was proposed, and linkage control interface specifications were achieved. The linkage control mode put WCF service into the acquisition module to provide linkage control services for platform terminal. The acquisition module achieves transmission and conversion of interactive information between platform terminal and controlled subsystem; meanwhile, it follows original platform structure and fully utilizes the special functions of the acquisition module.