Abstract: Based on the comprehensive research of the desulfurization of hot metal pretredrient process and working procedure of No. 1 Steel Plan of Baosteel, the offiine running software has been gotten. This software is designed as open system and it follows the rulers of the Token Management (integraion cost of desulfuration as the objective function). Under the offline running result, it is useful to reduce the desulfurizaition cost and promote the competition by applying this Optimization Model Software.