A case of tuberculous lymphadenitis is reported. The patient was a 40-year-old woman. She visited our hospital with a chief complaint of a painless swelling at the left submandibular gland. In clinical diagnosis, tumor of submandibular gland was suspected and it was removed under general anesthesia. Postoperativelly tuberculous focus was not recognized in other organs at physical examination. At present, six months after surgery, symptoms leading to recurrence are not found.