Abstract: Objective To assess the features and the value of diagnosing of HRCT with Pulmonary Spheral Tuberculosis(PST) Methods The 24 foci in 21 patients with PST were analyzed. Thin-sections at 1.5cm to 3.0cm thickness through the nodular center were obtained with plain and enhanced. Results The 13 foci (54.2%) were located in the lobus superior of pulom dexter, 5 foci (20.8%) in lobus inferior. The 6 foci were located (25.0%) in the lobus superior of pulmo sinister. The size of PST was 1.0cm to 3.8cm. The 18 foci were clear of verge and 6 foci were dim. The 16 foci had statllite focus. The 8 foci had calcification. No enhancement had 15 foci. The capsular enhancement had 8 foci. 1 focus showed extensive enhancement. Conclusion HRCT may show the verge and density of preferable. The change of density after enhancement was helpful in diagnosing and differential diagnosis of the PST.