At present, there are 7 kinds of human coronaviruses: HCoV-229E, HCoV-OC43, SARS-CoV, HCoV-NL63, HCoV-HKU1, MERS-CoV and novel coronavirus (SARS-CoV-2), that are the important pathogens of human respiratory tract infection. Among them, novel coronavirus (SARS-COV-2) presents clinical manifestations of fever, fatigue and other systemic symptoms, accompanied by dry cough, dyspnea, etc., can rapidly develop into severe pneumonia, respiratory failure, acute respiratory distress syndrome, septic shock, multiple organ failure, severe acid and base metabolism disorders, and even life-threatening. It is very necessary to perform an effective covid antigen test through an antigen covid test kit, and it can also achieve covid 19 rapid antigen test. SARS-CoV-2 Antigen Test Kit (Nephelometry Immunoassay Method) produced by Shijiazhuang Hipro Biotechnology Co., Ltd can be used for qualitative detection of SARS-CoV-2 antigen in nasopharyngeal swab or oropharyngeal swab samples. It is only used for early triage and rapid management of samples within 7 days of the onset of symptoms in the suspected population of acute infection, and cannot be used as the basis for the diagnosis and exclusion of pneumonia infected by SARS-CoV-2, and cannot be used for screening in the general population.