Objective To analyze the effect of continuous suture embedding method with autologous limbal conjunctival graft flap on postoperative tear film stability in patients with primary pterygium. Methods A total of 60 patients with primary pterygium who underwent selective surgery in Nanjing Lishui People's Hospital/Zhongda Hospital Lishui branch, Southeast University from January 2023 to December 2024 were selected, and they were divided into the control group and the observation group by the random number table method, with 30 patients in each group (All patients had unilateral involvement, with 30 affected eyes in each group). Both groups underwent pterygium excision. The control group was treated with interrupted suture method, and the observation group was treated with continuous suture embedding method. The schirmerⅠ test (SIt), corneal fluorescein staining (CFS) and tear film break-up time (BUT) were compared between the two groups to evaluate postoperative tear film stability. Results At 1 week after operation, the SIt, CFS and BUT in the two groups were lower than those before operation (P <0.05). At 1 and 2 weeks after operation, the SIt, CFS and BUT in the observation group were better than those in the control group (P <0.05). There were no significant differences in the SIt, CFS and BUT between the two groups at 1 month after operation (P >0.05). Conclusion The continuous suture embedding method can stabilize the tear film faster after pterygium surgery, quickly relieve postoperative irritation symptoms in the early stage, effectively increase the patient's tear secretion, and promote the recovery of postoperative ocular surface homeostasis.