The cutaneous ureterostomy that ureter is relocated to the abdominal skin or foreskin mucosa is applied for the animal suffering with lower urinary tract cancer, in addition to the cystectomy. After such surgical treatment, urine scalding at peristomal skin, pyelonephritis due to secondary infection, stricture or obstruction of ureteral fistula may be incident, because of sustained involuntary urination which cannot be avoided. In the present case, we reported perioperative nursing including skin protection using a film dressing for urinary scalding in dog treated with the cutaneous ureterostomy combined with the cystectomy. Canine patient diagnosed as suspected lower urinary tract cancer was 14-year-old intact female Wire Fox Terrier, weighing 6.5 kg with a body condition score (BCS) of 4 /9. After the cutaneous ureterostomy, sustained involuntary urination from the cutaneous ureteral fistula was observed. A wound protection film dressing, and antibacterial ointment were applied for the skin around the cutaneous ureteral fistula to prevent urine scalding. The skin protection was performed for 2 weeks from post-operation to reexamination after discharge, the skin condition was evaluated. As a result of performed skin protection using a film dressing, urine scalding or any complications such as dermatitis induced by dressing materials were not observed. The ureteral fistula and surrounding skin were maintained healthy.