Objective To explore the causes of delayed medical record archiving in a certain hospital and propose corresponding improvement measures to support hospital accreditation. Methods Discharged medical records from May 2023 to April 2024 in the hospital were selected as the control group, and those from May 2024 to April 2025 as the observation group. Administrative functional departments were organized to analyze the 2-day archiving status of medical records in the control group and propose scientific and reasonable improvement strategies. Results The 2-day archiving rate of the observation group was 1.6% higher than that of the control group. The archiving status of surgical medical records was relatively poor. Conclusion Guided by hospital accreditation indicators, Multi-Disciplinary Team (MDT) collaboration among administrative departments can improve the 2-day archiving rate.