Abstract: An evaluation period c to n (including k) from the past c to the future n for asset facilities to be managed is set. Based on the result value of the past profit and the forecast value of the future profit during the evaluation period and the fixed asset value of the facilities before and after the evaluation period, a management evaluation coefficient X during a set evaluation period, which includes a sum of past profit Pi? (i=C to k?1), a sum of future forecast profit Pi (i=k to n), and a difference in fixed asset value before and after the evaluation period (Vn?Vc), is computed. If management is evaluated based on the management evaluation coefficient X, they can be operated and managed by determining a management policy that targets a long-term profit that reflects the characteristics of the facilities.