Objective To analyze the role of implant-supported ffxed complete denture in oral function reconstruction and facial aesthetics improvement. Methods A total of 90 patients with edentulous jaw admitted to Songjiang District Yueyang Subdistrict Community Health Service Center from October 2023 to June 2025 were selected, and they were divided into the control group (n=45) and the experimental group (n=45) according to different restoration methods. The control group received conventional removable complete denture, and the experimental group received implant-supported ffxed complete denture. The oral function reconstruction indicators, facial aesthetics indicators and satisfaction were compared between the two groups. Results The maximum occlusal force and masticatory efffciency of the experimental group were higher than those of the control group (P<0.05). The nasolabial angle and lower 1/3 facial height ratio in the experimental group were higher than those in the control group, and the mentolabial angle was lower than that in the control group (P<0.05). The satisfaction rate of the experimental group (95.56%) was higher than that of the control group (80.00%) (P<0.05). Conclusion Compared with conventional removable complete denture, implant-supported ffxed complete denture can improve the masticatory function of patients with edentulous jaw, effectively optimize their facial aesthetics indicators, and achieve higher patient satisfaction, which is worthy of clinical application.