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目的:总结新型冠状病毒肺炎临床治愈患者CT影像特征，探讨符合出院标准患者的影像征象参考指标。方法:回顾性分析48例新冠肺炎患者符合出院标准时胸部CT影像，比较不同临床类型的影像特点。结果:分布特点：普通型①双肺下叶出现病变比例最高；②范围右肺大于左肺；③单侧看，右下叶或左下叶病变范围最大。④周围分布为主。重型及危重型①双肺各叶出现病变的比例近似。②范围右肺大于左肺。③右肺病变为著者则下叶范围最大；左肺为著者则上下叶范围相当。④弥漫分布者多。影像征象：普通型常见为纯磨玻璃影，其次为伴粗网格的磨玻璃影等。重型及危重型组以纤维索条及伴粗网格的磨玻璃影为主，其次为纯磨玻璃影等。两组比较，纯磨玻璃影在两组中均较常见；重型及危重型组出现伴细网格及粗网格的磨玻璃影、纤维索条及胸膜增厚比例高。结论:符合出院标准的CT影像为：①双肺渗出性病变不明显；②肺部影像表现出明显吸收修复征象。“,”Objective:To summary the CT imaging features of clinically cured coronavirus disease 2019 (COVID-19) patients, so as to explore the reference signs of imaging for patients who meet the discharge criteria.Methods:CT images of 48 COVID-19 cases meeting the discharge criteria were analyzed retrospectively, and imaging characteristics of different clinical types were analyzed.Results:The distributions of lesions in common type group were: 1) The proportion of lesions in the lower lobe of both lungs were highest; 2) The ranges of lesions in the right lung were larger than those in the left lung; 3) The ranges of lesions in lower lobe of each lung were wider; and 4) The lesions appeared mostly in the peripheral part of lungs. The distributions of lesions in severe and critical cases were: 1) The proportions of lesions in each lobe of both lungs were similar; 2) The ranges of lesions in the right lung were larger than those in the left lung; 3) The ranges of lesions in the right lower lobe were larger in patients with predominant right lung involvement while the ranges of lesions in the left upper and lower lobes were similar in patients with predominant left lung involvement; and 4) The most lesions distributed diffusely. For the features of CT signs, the most common signs in general cases were pure ground glass opacities (GGO), followed by GGO with thick grid shadow. The most common signs in severe and critical cases were fibrous and GGO with thick grid shadow, followed by pure GGO. For the general case group and the group of severe and critical cases, pure GGO were common in both groups. GGO with thin and thick grid shadows, fibrous and thickened pleural were more common in severe and critical group.Conclusions:CT imaging features for patients meeting discharge criteria were unobvious exudative lesions and obvious signs of absorption and repairment in lung imaging.