This study is designed to find an optimal rotation period of persimmon. The subjects are Sangju Doongsi and Cheongdo Bansi. Faustmann formula is introduced under the assumption of continuous farm management for persimmon production. The objective function is maximizing present value of profit from selling the produced persimmon. An optimal rotation period is found when the profit growth is a little bit larger than the discount rate. The optimal rotation period of Sangju Doongsi is 44 years old, while that of Cheongdo Bansi is 43 years old. The simulation results for the exterior shocks say that the optimal rotation period reacts only to the discount rate. The rotation period for the MSY is 42 years old for both types of persimmons, and it is shorter than rotation period for the MEY.