Objective To explore the influencing factors of subjective well-being of patients after the same-day surgery, and to provide evidence for optimizing the management mode of same-day surgery and improving the quality of life of patients after the operation. MethodsPatients who underwent same-day surgery at the Day Surgery Center, West China Tianfu Hospital of Sichuan University between June 2024 and May 2025 were retrospectively selected. The ordered Probit regression stratified model was adopted, with six dimensions variables were sequentially included: demographic characteristics, social support, community services, health status, lifestyle, and socioeconomic status, to analyze their impact on postoperative subjective well-being among patients undergoing same-day surgery. Results A total of 481 patients were included, with an average age of (54.58±15.69) years. The final model (Model 6) was statistically significant overall (LR χ2=172.840). The regression analysis results showed that there were statistically significant differences in the current physical condition-health, self-rated health status-poor (reversed scoring), and number of comorbidities-0 in the health status dimension (P<0.05). In the social support dimension, receiving comfort and care during emergencies was a strong positive predictive (P<0.05). In the community service dimension, there was no statistically significant difference in participation in follow-up management, community-provided examinations or guidance (P>0.05), but there was a statistically significant difference in the combined effect on subjective well-being (P<0.05). In the socioeconomic status dimension, “monthly income below 3 000 yuan”“postgraduate or higher education”“self-employment” were statistically significant (P<0.05). Conclusions Postoperative subjective well-being in patients undergoing same-day surgery mode is influenced by multiple factors, including social support, health status, and community services. Targeting these primary influencing factors with appropriate measures can enhance postoperative subjective well-being in same-day surgery mode patients.