2019 Novel coronavirus is a newly discovered coronavirus in humans and is a single-stranded virus. The probability of mutation is low, but the possibility of mutation still exists, although there is no evidence yet that this new virus has mutated. Novel coronaviruses are highly infectious, mainly through droplet, contact, and fecal-oral transmission. Most cases of novel coronavirus pneumonia have a good prognosis, but a few are critically ill and can even be fatal.