Since 2015, when the day surgery mode was officially reckoned and supported by the National Health Commission, the day surgery model has entered the new period of rapid development. But at the same time, challenges in the vacancy of the evaluation indexes of the medical quality and safety of day surgery still pose obstacles to its growth. At present, there is no nationally unified evaluating index or appraising system for the day surgery-related medical quality and safety. In this paper, based on structure-process-outcome theory, the day surgery practice and involved researching literature were retrieved, reviewed, and analyzed. Also, the practice model at West China Hospital of Sichuan University (a pioneer day surgery hospital in China) was comprehensively compared with the National Clinical Improvement System. From the aspect of day surgery medical quality and safety evaluation indicators, it is hoped to provide an evidence-based method and evaluation of day surgery, and a theoretical basis for establishing policies and data reference.