To investigate the effect of vitamin C combined with recombinant basic fibroblast growth factor (rbFGF) on inflammatory factors and oxygen environment in patients with high‐voltage electrical burns. A retrospective analysis of 98 patients with high‐voltage electrical burns admitted to our hospital from January 2021 to April 2022. A total of 98 patients were divided into research group and control group, including 49 cases treated with vitamin C combined with rbFGF and 49 cases treated with only rbFGF. The disappearance time of clinical symptoms, wound healing rate, area of granulation tissue growth, level of inflammatory factors, oxygen environment were compared between two groups after one and three courses of treatment. After treatment, the disappearance time of erythema, pain, swelling, blisters, exudate symptoms, wound healing time, scab formation time, and hospitalisation time in the research group were significantly better than those in control group (P < .05). There was no significant difference in the wound healing rate and area of granulation tissue growth between the two groups after one course of treatment (P > .05), while it is significantly better than those in control group after three courses of treatment (P < .05). The inflammatory factors, succinate dehydrogenase (SDH), lactate dehydrogenase (LDH) scores in research group were significantly better than that in control group after three courses of treatment (P < .05). Vitamin C combined with rbFGF may be worthy to reduce inflammatory factors, regulate oxygen environment, which can be popularised and applied in clinical practice.