Many wild animals can carry pathogens and become vectors for certain infectious diseases, and civets, bats, bamboo rats, and badgers are common hosts for coronaviruses. The outbreak of viral pneumonia in Wuhan has many similarities to the 2002 SARS outbreak in Guangdong, both occurring in winter, both initial occurrences originating from human contact with live animals traded in animal markets, and both caused by unknown coronaviruses. Since both the evolutionary neighbors and outgroup of the Wuhan novel coronavirus are found in various bat species, it is assumed that the natural host of the Wuhan novel coronavirus may also be a bat. As with the SARS coronavirus that led to 2002, it is likely that there is an unknown intermediate host vector for the novel coronavirus during transmission from bats to humans. So don’t eat unquarantined wildlife, fresh food, such as meat sold at roadside stands, and don’t take risks just for the sake of “tasting”. How is the new coronavirus transmitted from animals to humans? The virus taxa of novel coronavirus and SARS-CoV are all coronavirus HKU9-1 in bats, and many of the human infections associated with coronavirus are related to bats, and the natural hosts of many coronaviruses are bats. It is likely that bats are the native hosts of the novel coronavirus in Wuhan, which has evolved and mutated to complete the bat-intermediate host-human transmission. However, there may be additional intermediate hosts from bats to humans that have not yet been confirmed. Pathways of coronavirus from animal to human and human to human: contact transmission and droplet transmission.