This study sorted out five different versions of hospital evaluation criteria issued in different years and found that the frequency of 14 keywords was basically the same from most to least,in order of management,system,quality,safety,process,service,training,risk,continuous improvement,mechanism,data,culture,performance,and patient-centered.Combining the analysis of these five standards,we can understand the regularity and some subtle differences of the content of hospital evaluation criteria.Through learning these standards,we can also see the focus of hospital management and improvement.