Abstract: According to methodology of developing MIS system based on software component reusing, the paper discussed some key techniques in the safety management and information system of coal mine, such as proto type design of MIS component library, WWW publish of MIS component, automatic generation of user interface, etc. Combing with the practice of MIS system, this method was studied and used, which made the cost and period of system development be controlled obviously and the quality of system be improved. It had remark able effect.