Abstract: Objective: Analyze the role of CT examination in the 2019 new coronavirus epidemic. Methods: Retrospectively analyze all 8 864 cases of CT examination of the chest and heart group from the radiology department of The First Affiliated Hospital, College of Medicine, Zhejiang University from January 19 to February 19, 2020. The CT diagnosis results of these patients were summarized and analyzed. Result: 77.17% of the cases with CT diagnosis suspected to be Coronavirus disease(COVID-19) were confirmed. The number of CT examinations per capita for 55 discharged patients during hospitalization was 4 times, and 23 patients underwent CT re-examination after discharge. Conclusion: Imaging examination cannot replace nucleic acid testing, but it plays a vital role in the screening and treatment evaluation of new coronary pneumonia.