Abstract: OBJECTIVE To analyze the clinical and epidemiological characteristics of patients diagnosed with COVID-19 so as to provide scientific basis for formulating prevention and control strategies and measures. METHODS According to the Program of Epidemiological Investigation on Cases of Pneumonia Caused by Novel Coronavirus Infection in the third edition of the Program of Prevention and Control of Pneumonia Caused by Novel Coronavirus Infection by the National Health Commission, an epidemiological survey was conducted for the 26 patients who were diagnosed with NCP and have been treated in the Fifth Medical Center of Chinese PLA General Hospital since Jan. 2020. RESULTS The ratio of male to female was 2.25∶1; 25 cases were Han Nationality; 22 (84.62%) cases were more than 18 years old; 11 (42.31%) cases were enterprise and company personnel, technicians and students; 15 (57.69%) cases were from Beijing, 6 (23.08%) cases were from Hubei province; 14 (53.85%) cases had the history of travel to Wuhan, 13 (50.00%) had the history of residence in Wuhan; there were 10 (38.46%) cases who lived with confirmed patients and 12 (46.15%) cases who had the history of contact with confirmed patients.11 (42.31%) cases had onset of the disease due to aggregation.There were 20 (76.92%) cases of fever, 14 (53.85%) cases of weakness and 8 (30.77%) cases of dry cough. CONCLUSION The male patients are dominant among the confirmed patients, the people aged more than 40 years old are the population group at high risk of the disease.Most of the early confirmed cases in Beijing have the history of travel to Wuhan and the history of close contact with people from Wuhan.Nearly half of the patients present with the clustering onset of the disease due to their living together and closely contacting with confirmed patients.