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Objective: To evaluate the clinical efficacy of a bioabsorbable dressing in combination with antibacterial spray in treating third-degree burns., Method: Patients with third-degree burns in our hospital from February 2019 to February 2020 were enrolled and divided into an experimental group and a control group. In all patients, two wound repair surgeries were performed. During the first surgery, bioabsorbable dressing (PELNAC, Gunze Medical Equipment (Shenzhen) Co. Ltd., China) was used for wound treatment. During the second surgery, autologous split-thickness skin graft was performed. For patients in the experimental group, bioabsorbable dressings (PELNAC) were uniformly applied with antibacterial spray during the operation and during postoperative dressing. For patients in the control group, antibacterial spray was not used., Results: A total of 68 patients took part in the study (experimental group n=36; control group n=32). Infection rate in the experimental group was significantly lower than that in the control group (2.8% versus 21.9%, respectively; p<0.05). The mean wound healing time in the experimental group was shorter by 3.2 days and the wound healing rate of the experimental group was significantly higher than that in the control group (p<0.05). Vancouver Scar Scale (VSS) scores at specific postoperative time intervals were significantly reduced in the experimental group compared with those in the control group (p<0.05)., Conclusion: Bioabsorbable dressing combined with antibacterial spray could reduce infection rate, shorten wound healing time and reduce scar formation in repairing third-degree burns.