Objective: To explore the impact of positive psychological intervention on the mental health and surgical satisfaction of patients undergoing facial plastic surgery. Methods: The research subjects were 70 patients with facial plastic surgery and aesthetic treatment admitted from July 2024 to July 2025. The subjects were grouped by random lottery. 35 patients who received conventional nursing intervention were included in the control group, and 35 patients who received combined positive psychological intervention were included in the study group. Evaluate the self-acceptance and mental health levels, cosmetic effects and surgical satisfaction of the two groups of patients. Results: Compared with the SAS and SDS scores of the two groups of patients, the scores after the intervention were lower than those before the intervention, and the group with lower scores was the study group (P<0.05). The comparison of self-acceptance levels between the two groups of patients showed that the study group had a more significant increase after the intervention (P < 0.05). The comparison of mental health scores between the two groups of patients showed that the study group had a more significant decrease after the intervention (P<0.05). The overall facial cosmetic effect of the patients in the study group was better than that of the control group (P < 0.05). The surgical satisfaction of the patients in the study group was higher than that in the control group (P<0.05). Conclusion: Implementing positive psychological intervention for patients undergoing facial plastic surgery and aesthetic treatment can not only enhance their self-acceptance and mental health levels, but also help improve the aesthetic effect and patients' satisfaction with the surgery, thus having high application value.