Abstract: In view of problems of single function and nonextensibility of file synchronization module of current monitoring and control system for coal mine safety, the paper proposed a design scheme of file synchronization component with extensibility. The component uses event-triggered mode to recognize changed file, selects HASH code as judgment basis of file change, solves problem of file synchronization conflict through recording the last modification time of file, and selects WCF to make communication between server and client. The field application showed that the component can ensure consistency of configuration file between server and client, which meets requirement and improves reliability of monitoring and control system for coal mine safety.