Objective To explore the effect of humanistic care combined with internet-based continuous nursing on scar improvement in patients undergoing cosmetic suture for facial trauma. Methods A total of 200 patients who underwent cosmetic suture for facial trauma admitted to our hospital from June 2024 to June 2025 were selected, and they were divided into the control group and the observation group according to different nursing schemes, with 100 patients in each group. The control group received conventional nursing, and the observation group received humanistic care combined with internet-based continuous nursing. The scar improvement, postoperative pain intensity, wound healing, psychological state and satisfaction were compared between the two groups. Results After intervention, the scar improvement scores of the observation group were lower than those of the control group (P<0.05). The NRS scores of the observation group on the 1st, 3rd and 5th days after operation were lower than those of the control group (P<0.05). The wound healing rate of the observation group (99.00%) was higher than that of the control group (93.00%) (P<0.05). After intervention, the psychological state scores of the observation group were lower than those of the control group (P<0.05). The satisfaction rate of the observation group (94.00%) was higher than that of the control group (68.00%) (P<0.05). Conclusion The application of humanistic care combined with internet-based continuous nursing in cosmetic suture for facial trauma has a deffnite nursing effect. It can improve scar condition and psychological state, effectively reduce postoperative pain intensity, and promote wound healing.