Nowadays, all kind of enterprises have to face the tough environment-the low margin age. With the factors like liberalization of global trade, emergence of the newly industrialized countries and the blooming BRICs, the worse situation makes them to tolerate more pressure than before. One of all concern important items is cost system that we cannot put aside while composing a good business strategy, no matter how important low-cost leadership strategy, differentiation strategy, or focus differentiation strategy is. The key ingredients make enterprises more competitive including the implement of strategies and the control of cost. But what is the analysts¡¦ great responsibility for providing the right and instant information to the top managers is the cost information matched with the strategies and delivered precisely in the right time. According to the current cost system in this studied case, neither can the information supplied becomes the key source to assist top managers to make the vital decision, nor can performance appraisal system be used. How to create a feasible cost system which can provide the precise and instant information is the main purpose of the essay. The studied case in the essay is one of the public paper manufacturers in Taiwan and almost produces all kind of paper. To simplify the compliexity, focusing on the fine paper, the most competitive field of paper industry in the world becomes my main part of discussion in the essay. And hopefully it will become the trigger to get lots of people involved to continue the study further.