In this study, we surveyed 134 households in Vinh Linh district, Quang Tri province, in which there are 55 households planting for largesized timber and 79 households not planting for large-sized timber. By applying “Cost-Benefit Analysis” method, the result of study showed that plantation for large-sized timber brings more benefits for local people than plantation for small-sized timber | Small sized timber or large sized timber plantation: A case study in Vinh Linh district, Quang Tri province