To analyze the application effect of plastic and cosmetic repair technology in the treatment of facial trauma. Methods A total of 80 patients with facial trauma admitted to the General Hospital of Southern Theatre Command of PLA from January 2022 to May 2023 were randomly divided into control group and study group, with 40 patients in each group. The control group was treated with routine treatment, and the study group was treated with plastic and cosmetic repair. The plastic repair effect, clinical index, scar condition, quality of life and repair satisfaction were compared between the two groups. Results The excellent and good rate of facial trauma recovery in the study group was 95.00%, which was higher than 77.50% in the control group (P <0.05). The edema time, wound healing time and suture removal time in the study group were shorter than those in the control group, and the incidence of complications was lower than that in the control group (P <0.05). The scores of color, thickness, softness and vascular distribution in the study group were lower than those in the control group (P <0.05). The scores of quality of life in the study group were higher than those in the control group (P <0.05). The satisfaction of repair in the study group was 97.50%, which was higher than 82.50% in the control group (P <0.05). Conclusion Plastic and cosmetic repair technology can effectively promote wound healing and improve facial aesthetics in the treatment of facial trauma