Genital tuberculosis occuring in the spermatic cord is a very rare disease. A 64-year old patient presented with a mass on the right side of the inguinal area which had been painful and had gradually enlarged since 2 weaks ago. Under the ultrasonoghaphic diagnosis of a right inguinal hernia, surgical exploration was performed. The lesion was tuberculosis histopathologically and there was no apparent coexisting tuberculous lesion elsewhere in the body. After postoperative ajuvant antituberculous therapy for 4 months, recurrence has not been found.