Objective: To stimulate employees' work enthusiasm and promote the high-quality development of hospitals by reconstructing performance. Methods: A set of performance quantification and statistical indicator systems applicable across departments was established. By utilizing the reconstructed performance plan and assessment management model, the role of performance assessment was analyzed through the operational status of various indicators. Results: The ratio of outpatient visits to discharges increased by 1.24 year-on-year, the proportion of surgeries among discharged patients increased by 4.25 percentage points year-on-year, the proportion of minimally invasive surgeries among discharged patients increased by 2.56 percentage points year-on-year, the proportion of Level IV surgeries among discharged patients increased by 3.15 percentage points year-on-year, the average length of hospital stay decreased by 0.62 days year-on-year, the proportion of medical service revenue increased by 5.38 percentage points year-on-year, the growth rate of average drug expenses per outpatient visit was -18.79%, the growth rate of average drug expenses per hospitalization was -33.16%, and the case mix index (CMI value) increased by 0.04 year-on-year. Conclusion: Reconstructing performance can effectively achieve the goals of patient satisfaction, employee satisfaction, and the healthy, sustainable, and high-quality development of hospital medical groups and tightly integrated medical consortia.