Abstract: Objective: To evaluate the diagnostic value of ⁶⁷Ga citrate scintigraphy for lung sarcoidosis and its clinical application. Methods: A total of 72 patients（66 patients with lung sarcoidosis and 6 patients without lung sarcoidosis but with tuberculosis）were included in this study.Their ⁶⁷Ga citrate scintigraphy,chest X-ray film and CT as well as their pathological data were analyzed retrospectively. Results: The diagnostic accuracy of ⁶⁷Ga citrate planar image and X-ray film combined with CT was 83.3%（55/66）and 78.8%（52/66）,respectively.No significantly difference was found between the two methods（P=0.656 8）.Pathological examination was performed for 12 patients with lung sarcoidosis,but the results were different.The diagnostic accuracy of ⁶⁷Ga citrate planar image and X-ray film combined with CT was 91.7%（11/12）and 33.3%（4/12）,respectively.A significantly difference was found between the two methods（P=0.011 4）.Pathological examination could not differentiate lung sarcoidosis from tuberculosis in 4 patients,which could not be definitely diagnosed by X-ray and CT.Three of the four patients were diagnosed having lung sarcoidosis by ⁶⁷Ga citrate planar image according to the pattern of"Panda Face"and the Greek letter lambda located in bilateral hilar lymph nodes,the remaining one without lung sarcoidosis was diagnosed having lung tuberculosis. Conclusion: ⁶⁷Ga scintigraphy can accurately diagnose lung sarcoidosis in patients with lung tuberculosis.