Abstract: To formulate the cost of requirement product is benefical to marketing localization of the product and it can encourage the design for cost. How to evaluate the product cost in the phase of requirement design was researched and a cost analysis method of requirement product based on requirement cost features was presented. This method takes all costs in the product life cycle into account, and through the requirement cost features break-down structure (RCFBS) the extensibility of the cost category can be facilitated and the reuse of cost components can be achieved. With this method enterprises can be assisted in decision-making in order to gain the predominance in the ardent market competition.