目的：分析不同来源住院病人构成和变化，为合理分配医疗资源，确定服务范围和拓展方向提供参考。方法：利用HQMS系统收集2018年-2020年某院所有出院患者相关信息及主要诊断编码，并进行统计分析。结果：调取 342 619人次住院患者的基本信息，南京市本地占52.16%，其他地区占47.84%；不同地区来源患者性别构成、年龄分布、病种构成均存在差异。结论：应根据不同来源患者的构成特点和变化及时调整医疗策略，提高医院综合服务质量，促进医院可持续发展。

Objective：To provide the scientific evidence for rational allocation of medical and health resources，service scope and expansion direction by analyzing composition and change of inpatients from different sources. Methods：The data and primary diagnosis codes of all discharged patients from 2018 to 2020 were analyzed according to HQMS. Results：The basic information of 342，619 inpatients was retrieved，among which Nanjing accounted for 52.16% and other regions accounted for 47.84%. There were differences in the gender composition，age distribution and disease composition of patients from different regions. Conclusion：Adjusting medical strategies timely is helpful to improve the quality of hospital comprehensive services and promote the sustainable development of hospitals according to the composition characteristics and changes of patients from different sources.