The records of 18 patients with squamous cell carcinoma of the tongue and floor of mouth treated surgically were reviewed. Surgical approaches, staging, treatment modalities, recurrence and vital status were evaluated. The distrubutions of involved sites were tongue(9 cases) and mouth floor(9 cases). Patients were treated by surgery primarily, combined chemotherapy and radiation, and by surgical salvage in the failure cases of radiation and chemotherapy. All ipsilateral necks of mouth floor cancer and advanced tongue cancer were treated with neck dissection. Cases of early tongue cancer could be excised with transoral route, and advanced cases needed transmandibular approach. Whereas, majorites of mouth floor cancer needed transmandibular approach, and other cases could be excised transoral and pull-through approaches. In the recontructions, we used primary closure, pectoralis major myocutaneous flap, forearm free flap, fibular osteocutaneous flap and skin graft. One year survival rate was 93% and 2 year survival rate was 60%.