Objective To explore the application value of light-cured composite resin in clinical oral cosmetic repair. Methods A total of 80 patients admitted to our hospital from March 2021 to January 2023 were selected as the research objects. They were divided into study group and control group by random number table method, with 40 patients in each group. The study group was repaired with light-cured composite resin, and the control group was repaired with porcelain crown. The repair satisfaction, complication rate and tooth repair effect were compared between the two groups. Results The satisfaction of dental restoration in the study group was higher than that in the control group ( P <0.05). The total incidence of complications in the study group was lower than that in the control group ( P <0.05). The effect of tooth repair in the study group was higher than that in the control group ( P <0.05). Conclusion During oral cosmetic repair, the use of light-cured composite resin repair can improve the practicability, aesthetics and functionality of patients' teeth, reduce the incidence of complications, and have high patient satisfaction, which is worthy of clinical application.