[Purpose] After finger amputation for anti-neutrophil cytoplasmic antibody-associated vasculitis, ulceration occurred preventing epthelization of the surgical wound of a dialysis patient, and treatment for the wound was expected to become long term. Micro-current electrotherapy (MCET) was started 8 months after hospitalization with the objective of epethilization of the wound, and its effect was retrospectively investigated using medical records. [Subject] A hemodialysis patient who was discharged with epithelization of a surgical wound after 25 months hospital treatment. [Method] After discharge, data regarding the condition of the patient’s surgical wound were retrospectively retrieved from medical records, and the course before and after MCET was compared. MCET was performed for 30 minutes, once a day, 6 times a week. [Results] Bone sequestrum of fingers I~V of the right hand ceased, and 18 months after the start of the treatment, epithilization of the ulcerated part of the wound occurred. [Conclusion] After amputation for vasculitis, it is possible that MCET using a small lightweight device to treat ulceration of the surgical wound was useful.