Five cases of primary chondrosarcoma, a rare tumor of the lung, are reported. The diagnosis should be made by pathology. The diagnosis can not be made in some conditions including: (1) tumor from the chest wall; (2) chondrosarcoma of bone discovered after operation; (3) ovarian teratoma found prior to operation; (4) patient with history of hamartoma of the lung; and (5) atypical pathology. It has no close relation between pathologic subtyping and prognosis of the disease. The main cause of death was intralobar spread of the lung. Extrathoracic metastasis was no observed and surgical resection is the primary option of therapeutic management for this tumor.