Objective：This study aims to analyze and summarize the clinical characteristics of patients infected with corona virus disease 2019（COVID-19）in fever clinic，and compare the differences in clinical characteristics of patients with different length of stay. Methods：The clinical manifestations，laboratory examinations and imaging data of 11 patients with COVID-19，who were diagnosed in the fever clinic of the First Affiliated Hospital of Nanjing Medical University from January 2，2020 to February 29，2020，were analyzed and summarized，and the differences of clinical characteristics among patients with different length of stay were compared. Results：Among the 11 patients，6 patients with underlying diseases，and 1 patient with a history of chronic smoking. The symptoms of fever and dry cough were the most common symptom. The lymphocyte count was decreased in 7 patients. The most common chest CT abnormality is the ground-glass exudation of the lungs. Compared with the patients with hospitalization time＞ 14 days，the patients with hospitalization time ≤ 14 days had a lower average age，shorter symptom duration before the first visit，higher absolute neutrophil count and basal albumin level，and less infiltrated pulmonary lobes. Due to the small sample size，there was no statistically significant difference between the two groups. Conclusion：During the diagnosis and treatment of fever outpatients，it is necessary to pay attention to the patients’ epidemiological history and abnormal CT manifestations of the chest. At the same time，it is necessary to be aware that the risk factors of long-term hospitalization for patients with COVID-19 may be the elderly age and the large number of pneumonia infiltration