Abstract: Guided by the thought of object-oriented, the traits of coal seam water infusion were analyzed. The system was designed in VC environment which was aided by the analysis on the system’s structure and function. The inner arithmetic of calculating module was mainly based on the respective requirement of the di-(fferent) infusion types. The application of coal seam water infusion designing system can instead of the man’s work in calculating the infusion parameters, so that alleviate the man’s work and easy in management of coal seam infusion.