The Jeju missing person false termination case has once again sparked controversy over the police's missing person investigation methods. After the Christmas Eve Hyejin Lee and Yesul Woo murder case, a criminal missing persons team was established, but its actual operation was formalistic or lacked a dedicated system. In 2015, the work was transferred to the Women and Youth Division (WYD), but the WYD-centered investigation system also did not last long. After the 'Geumni Dad' case in 2017, the initial investigation method was changed back to involve the Criminal Investigation Division and local police, but confusion arose. Ultimately, through legislation, missing person investigations were transferred back to the Criminal Investigation Division, but problems still remain. The recent Jeju missing person false termination case once again highlights the need for improvement in the police's missing person investigation system. At the scene, there are demands for procedural strengthening and solutions to practical problems such as staff shortages.