Sever Acute Respiratory Syndrome Coronavirus 2(SARS-CoV-2),the causative agent of the Coronavirus disease(Covid-19) pandemic, has so far resulted in more than 1.1M deaths and 40M cases worldwide with no confirmed remedy yet available. Since the frist outbreak in Wuhan, China in December 2019, researchers across the globe have been in a race to develop therapies and vaccines against the disease.SARS-CoV-2 ,similar to other previously identified Coronaviridae family members, encodes several structural proteins , such as spike , envelope , membrane ,and nucleocapsid, that are responsible for host penetration , binding ,recycling, and pathogensis. In the winter of 2020,many areas second burst, the medical testing institutions have a lot of testing pressure, If a crowd gathers, it is very susceptible as well. So to test by self in home will be Desperately .The SARS-CoV-2 Antigen Rapid Test Kit is a lateral flow chromatographic immunoassay for the qualitative detection of SARS-CoV-2 Antigen in human saliva specimens. Saliva test will be easier than swab test. People don’t need to collect the specimen in deep throat and Oropharynx. It will be more comfortable than swab test.