[en] Objective: To investigate the CT findings and clinical features of COVID-19 patients with different clinical subtypes. Methods: Retrospective analysis was performed on the clinical and the initial CT imaging data of 189 COVID-19 patients (91 males and 98 females, mean age 46.5 ± 16.6 years) from January 24 to February 17, 2020. They were divided into common group (common type, 153 cases) and severe group (severe or critical type, 36 cases). Chi-square test or t test was used to compare the clinical features and CT findings between the two groups. Results: The proportion of males (72.2%), age (55.9 ± 15.4 years), incidences of hypertension, diabetes, dizziness, headache, aches and pains, shortness of breath and high fever, and rate of abnormal leukocyte, lymphocyte and neutrophil were higher in the severe group than in the common group (all P < 0.05). The lesions involved bilateral lungs, more than 10 lung segments in all patients in the severe group. The number of lesions (24.8 ± 13.5 vs 12.3 ± 8.8) and rates of simple consolidation shadow and subpleural effusionin were higher in the severe group than in the common group (all P < 0.05). Conclusion: There are significant differences in clinical symptoms, laboratory examination and CT findings between patients with common COVID-19 and patients with severe/critical COVID-19. Understanding and mastering these differences is helpful for clinicians and radiologists in severity assessment of COVID-19 patients. (authors)