Although the epidemiological information about the novel coronavirus is not perfect, but through the comparison and analysis of existing cases and virus genome, scientists in China and around the world generally believe that the novel coronavirus that appeared in December 2019 originated from wild animals, and some scholars currently believe that the Chinese chrysanthemum-headed bat is the most likely, but the specific kind of wild animal remains to be confirmed. Since novel coronaviruses are highly contagious and can be transmitted through respiratory droplets and direct or indirect contact, the public needs to be aware of increased protection.