If the temperature of novel coronavirus pneumonia exceeds 37.3 degrees Celsius and is accompanied by cough, shortness of breath, chest tightness and fatigue, it is necessary to rule out the presence of novel coronavirus infection, especially if there is a history of travel or residence in the infected area or a history of contact with confirmed cases in the surrounding area, which is highly suspicious of novel coronavirus infection. However, not every patient with a fever is a novel coronavirus infection, and a complete chest CT blood test and nucleic acid test are needed to screen for this.