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Coronavirus are a group of related RNA viruses that cause disease in mammals and birds. In humans, these viruses cause respiratory tract infections that can range from mild to lethal. More lethal varieties can cause SARS(Severe Acute Respiratory Syndrome), MERS(Middle east respiratory syndrome),COVID-19. Virus first affected the domesticated animals caused by IBV.Human coronavirus was discovered in 1960s.Two novel strains B814 and 229E were subsequently imaged by electron microscopy. The information about the structure of coronavirus and the testing for COVID-19 was searched in relevant search engines and related researches.The Knowledge and current point of time analysed.The consensus was established. The structural components,Impact of Pathogenesis and Impact on testing is expalined to create a clear view about the structure and the various testing methods for the detection of the virus. The structure of coronavirus and testing for COVID-19 has been assessed and analysed.