Objective: Currently, the medical adverse events stem in part from a lack of significant risk management in preoperative evaluation. This study was to apply the systematic risk management —AS/NZS 4360:2004 to perform the project of preoperative evaluation.Methods: With the idea of risk management, the doctor’s classification and surgery’s groups were graded to lay the foundation for project management. Then a preoperative evaluation center was established as a screening role in health management based on AS/NZS 4360:2004.Results: A total of 144 out of 1,436 patients were identified as ones with much risk mainly including clinical characteristics such as abnormal test (n = 27), cardiovascular disease (n = 27) and fever (n = 23) from pediatric (35%), general surgery (20%) and trauma (15.66%) department. Finally, the potential risk was reduced in the medical process meanwhile the quality of treatment was improved.Conclusions: This study shows that risk management could be applied into all aspects of hospital management as a drastic and practiced tool.