The authors reviewed and analyzed the pathologically confirmed 473 cases of soft tissue tumors which had been treated at Department of Orthopedic Surgery in Severance Hospital, Yonsei University College of Medicine from January 1972 to December 1991. The results were as follows; 1. Among 473 cases of soft tissue tumors, 361(76.3%) cases were benign and 112 (23.7%) cases were malignant. 2. The most common benign soft tissue tumor was lipoma (51.2%) followed by schwannoma (16.6%), neurofibroma (9.4%) and hemangioma (8.6%) in decreasing order of incidence. Among the malignant group, rhabdomyosarcoma was the most common (28.5%) and fibro sarcoma (17.8%), malignant fibrous histiocytoma (17.0%) and liposarcoma (15.2%) were next common group. 3. In benign tumor, female was affected about 1.42 times more common. But in malignant tumor, male was more affected 2,3 times. 4. There was no predilection site in benign tumor, but in malignant tumor, the lower extremity was the predominant site of occurrence. 5. The distant metastasis occurred in 42 cases (37.5%) of 112 malignant tumor and the lung (54.8%) was the most frequent site of metastasis. 6. The local recurrence of benign tumor occured in 26 (7.2%) among 361 cases. 7. Among 67 cases of malignant tumors who were followed, 43(64.2%) survived more than 2 years and 15 (22.3%) survived more than 5 years.