Chills are not necessarily due to a novel coronavirus infection, but are more commonly caused by an elevated body temperature and fever. In this case, it is recommended to improve the temperature check to clarify, if the body temperature is more than 37.3℃, it is considered fever. There are many causes of fever, and fever caused by novel coronavirus infection is one of them, but other causes can also cause fever, such as acute upper respiratory tract infection, influenza and gastrointestinal infection, urinary tract infection and so on. It is necessary to improve the relevant tests to clarify the diagnosis, such as routine blood tests, inflammatory markers, C-reactive protein and chest CT, etc. Only when the diagnosis is clear can the next step of diagnosis and treatment be carried out.