Retrospective analysis of multi-slice computed tomography (MSCT) manifestations were conducted for 8 cases of pathologically confirmed primary pulmonary sarcomatoid carcinoma. And the relevant literature was also reviewed. The lesion sites were right upper lobe (n=5), lower lobe (n=2) and left upper lobe (n=1). One case was difficult to distinguish because of its huge mass and the remainder was all peripheral. With pseudocapsule (n=4), coarse calcification (n=1), hilar & mediastinal node metastasis (n=2) and cavity (n=1). The manifestations included extensive lung alveolar septal thickening & ground glass (n=1) and massive deep leaf & glitches (n=2). The scans were non-enhanced alone (n=1) and non-enhanced & enhanced (n=7). Six cases had shaped enhancement while another 5 uneven thickness of annular enhancement. And 4 cases had floating-ice change. Primary pulmonary sarcomatoid carcinoma is common in subpleural lung lobe. And the floating-ice sign is valuable in the diagnosis of sarcomatoid carcinoma. Key words: Lung; Primary sarcomatoid carcinoma