We describe a case of tuberculous epididymitis following Bacillus Calmette-Guérin (BCG) instillation in a 79-year-old man. He had received transuretheral resection of bladder tumor in Sep 2009. Histopathological diagnosis was urothelial carcinoma, high grade, pTa and pTis. To prevent recurrence, he received maintenance therapy for Feb 2010-May 2011 after eight weekly intravesical instillation of BCG. Skin fistula with discharge in the left scrotum occurred in Sep 2011. Treatment with levofloxacin was not effective. Therefore, we performed bilateral orchiectomy (he had hormone therapy of prostate cancer) and left scrotal skin resection. Histopathological examine showed tuberculous epididymitis. He had no signs of recurrence 2 years postoperatively and has not received any anti-tuberculous chemotherapy.