Objective To explore the effect of modified minimally invasive small-incision surgery on mental health status of patients undergoing double eyelid surgery. Methods A total of 60 patients who received double eyelid surgery in the Department of Ophthalmology, Qinghai Red Cross Hospital from January 2022 to January 2025 were selected as the research subjects. According to the order of consultation, they were divided into the control group and the observation group, with 30 patients in each group. The control group was given traditional embedding double eyelid surgery treatment, and the observation group was treated with modiffed minimally invasive small-incision surgery. The pain status, surgical indicators, mental health status, complication rate and satisfaction with surgical effects were compared between the two groups. Results The postoperative pain score of the observation group was lower than that of the control group (P<0.05). The swelling regression time and incision healing time of the observation group were shorter than those of the control group (P<0.05). The scores of mental health status indicators of the observation group after surgery were higher than those of the control group (P<0.05). The incidence of complications in the observation group was lower than that in the control group (P<0.05). The scores of satisfaction with surgical effects of the observation group after surgery were higher than those of the control group (P<0.05). Conclusion Modified minimally invasive small-incision double eyelid surgery can effectively shorten the swelling regression time and incision healing time, reduce postoperative pain, and has positive signiffcance in improving patients' mental health status and satisfaction with surgical effects.