This study examines the status of out-of-home care leavers discharged under the age of 18 and the policy support available for their independent living. It analyzes policy gaps and support measures for early-discharged youth, referencing cases from the UK, Germany, and the United States. A survey of child protection staff and qualitative interviews with young people preparing for independent living and professionals were conducted to assess needs among the early leavers. Based on the analysis, the study proposes an integrated support policy for early-discharged care leavers.