Patients with mild neocoronavirus are usually characterized by low-grade fever and mild malaise, and may have no obvious pulmonary symptoms. As the body’s immunity continues to grow, the new coronavirus continues to mutate, and patients infected with the mild form of the new coronavirus are now gradually becoming more prevalent. This group of patients is positive for new coronavirus nucleic acid test, but the clinical symptoms are relatively mild, usually appearing low fever, body temperature between 37 ℃ and 38.5 ℃, manifested by mild malaise, usually does not affect daily life. There may be no obvious pulmonary symptoms such as cough, sputum, hoarseness and dyspnea. Mildly ill patients are highly contagious even though their clinical symptoms are not severe, and once detected it is recommended that they should be isolated and treated immediately to prevent further spread of the new coronavirus.