Objective:To analyze the epidemiological characteristics of asymptomatic SARS-CoV-2 novel coronavirus infection cases in Yinchuan City,Ningxia.Methods:Cases of asymptomatic SARSCoV-2 novel coronavirus infections discovered in Yinchuan City from February 2020 to April 2020 were taken as the research subjects,epidemiological and laboratory examination data were collected,and statistics and analysis were conducted.Results:Among the 10 cases of asymptomatic infection,6 were males and 4 were females,with an average age of(34.3±2.1)years;2 cases had a history of living in Hubei,8 cases had a history of close contact with confirmed cases;6 cases had no other underlying diseases while the other 4 cases were accompanied by one or more underlying diseases;6 cases were diagnosed as asymptomatic infection by serum-specific IgM antibody detection;4 cases were diagnosed as asymptomatic infection by throat swab testing;there were 4 cases with alanine base transferase level higher than the normal range,2 cases with aspartate aminotransferase level higher than the normal range,and 3 cases with D-dimer level out of the normal range.Conclusion:The asymptomatic SARS-CoV-2 novel coronavirus infection has certain clinical characteristics;it is infectious and has insidious characteristics.Even if medical observation is dismissed,monitoring is still needed to prevent the pandemic from rebounding.