Abstract: Purpose: To evaluate and compare the diagnostic Value of conventional X-ray film, tomographic film and CT, BAG (bronchial arteriography) in pulmonary carcinoma. Methods: With pathologic correlation authors retrospectively analyzed the radiological manifestation of chest rediograph,tomographic film and CT, BAG of 101 cases in pulmonary carcinoma. Rusults: chest radiogram, tomographic film and CT had been performed in 61 cases, correct diagnoses, undefinite diagnoses, missed diagnoses were made on the basis of chest radiogram, tomographic film in 43 cases(70.5%), 16 cases (26.2%),8 cases (13.1%). Correct diagnoses and missed diagnoses were made by CT in 57 cases (93.4%) and 4 cases (6.6%). BAG had been performed in 40 cases. the typical theriographic manifestation of carcinoma was tumor vessel,tumor stain tumor encirclement it were described 27 cases(67.5%); 20 cases (50%); 35 cases (87.5%). The rate of successful aniography carcinoma could be identibied accurately by chest radiogram, tomoglaphic film and CT, CT is more sensitve in demonstrating bronchus in pulmonary segment and pulmonary lobe and appearances of entire tumor. Compared with plain chest film, tomographic film. CT is more sensitive in demonstrating internal structural of lesion, margin, peritumoral, metastases in mediastinum and pleura, lesions in perimediastinum and perispine. BAG is helpful to the correct diagnosis of pulmonary carcinoma.