ABSTRACT Coronavirus is the emerging mutagenic pathogenic microorganism that is affecting the human beings in a larger extent. The name is given after its crown shaped like structure. In this review, structure and history of coronavirus is explained in detail. The history depicts the similarity and dissimilarity of novid coronavirus with preexisting SARS virus. Apart from that review also concludes about the mechanism of action of virus, how it spreads and transfer in human system. The symptoms and preventive measures are also discussed in the review.