Objective:To discuss the high risk cut-off point of Chinese version of the Morse Fall Scale. Methods:A retrospective study was conducted based on the data of falls in the Nursing Adverse Events Report System from January 2016 to December 2016.A population based 1∶2 matched case-control study was conducted;338 control subjects were those who hospitalized for the same period without falls. ROC curve was used to analyze the accuracy and best high risk cut-off point of the Chinese version of the Morse Fall Scale.Results:The area under ROC curve was 0.835 and 95% confidence intervals were 0.794-0.876. With the Morse Fall Scale score and the best cut-off point of 50

Youden’s index was the largest

at 0.630. The validity indicators were 75.74% for sensitivity

87.28% for specificity

74.85% for positive predictive value（PPV）

87.80% for negative predictive value（NPV）

83.43% for accuracy

5.95 for positive likelihood ratio. Conclusion:The study results show 50 point can be used as the best cut-off value of screening high-risk groups.