Objective To explore the effect of conjoint fascial sheath suspension (CFS) in the treatment of recurrent congenital ptosis of the upper eyelid on satisfaction degree after suture removal. Methods A total of 100 patients with recurrent congenital ptosis of the upper eyelid admitted to our hospital from January 2019 to January 2024 were selected as the research subjects. According to the random number table method, they were divided into the control group and the observation group, with 50 patients in each group. The control group received levator muscle resection (LMR) treatment, and the observation group received conjoint fascial sheath suspension (CFS) treatment. The treatment effect, satisfaction degree after suture removal, cosmetic effect and adverse reactions were compared between the two groups. Results The total effective rate of treatment in the observation group (98.00%) was higher than that in the control group (78.00%) (P <0.05). The satisfaction degrees of looking straight ahead and looking upward after suture removal in the observation group (96.00%, 98.00%) were better than those in the control group (76.00%, 72.00%) (P <0.05). The scores of eyelid curvature, eyelid height and double eyelid in the observation group were better than those in the control group (P <0.05). The incidence of adverse reactions in the observation group (2.00%) was lower than that in the control group (14.00%) (P <0.05). Conclusion The application of CFS in the treatment of recurrent congenital ptosis of the upper eyelid has a better effect, with higher patient satisfaction degree and fewer adverse reactions, which is worthy of clinical application.