Objective:Through the analysis of the influence indicators of average hospitalization and comparison of differences of these indicators among different clinical departments in a hospital, to evaluate the medical quality and management level of the hospital and provide scientific reference for improving the hospital management efficiency and benefits.Methods:Gender, age and the type of medical insurance were analyzed using the chi square test. The length of hospital stay through 2009 to 2013 were analyzed using F test for patients of different insurance type and using t test for patients from different departments. All tests were completed using SPSS18.0.Results: The average hospital stay was decreasing year by year. Compared with the overall average length of stay, the patients who pay free were stay longer in hospital except for a small number of departments of internal medicine. Besides, the severe cases also prolonged the average length of stay in hospital.Conclusion: To effectively control the average length of stay, the Physicians Examination in Three Levels should be strictly implemented and the information management system should be used scientifically. Reasonable measures should be taken to solve the existing problems.%目的：探讨医院医疗质量和管理方法，分析影响平均住院日的因素和比对临床科室的指标差异，为有效提升医院管理效能提供参考。方法：使用SPSS 18.0统计软件，利用卡方检验对各年度间住院患者的性别、年龄及付费方式等分布是否均衡进行分析，用t检验对内外科患者的平均住院日数据进行分析，通过方差分析对不同付费方式患者的平均住院日进行比较。结果：医院整体平均住院日呈逐年下降趋势，而免费的伤病员平均住院日均高于当年度的医院整体平均住院日水平，重症患者的增多也延长了医院平均住院日。结论：为有效控制平均住院日，医院要严格落实“三级医师检诊”制度，科学运用医院信息化管理系统，针对发现的问题采取合理的措施。
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