Early symptoms of novel coronavirus pneumonia may include fever, malaise, dry cough, and progressive dyspnea; in mild cases, there may be no obvious fever, and some patients with novel coronavirus pneumonia may have some “atypical” symptoms in the early stages, such as: (1) only digestive symptoms as the first manifestation: such as mild nausea, malaise, poor mental (2) Neurological symptoms as the first manifestation. (2) Neurological symptoms as the first manifestation: e.g. headache. (3) Cardiovascular system symptoms as the first manifestation: such as panic, chest tightness, etc. (4) Ophthalmic symptoms as the first manifestation, such as conjunctivitis. (5) Mild muscle pain in the extremities or lower back only.