A little cough is not necessarily present with a novel coronavirus infection or a little cough is generally not a novel coronavirus infection. A little cough can be seen in a variety of respiratory infections, such as the common cold, bronchitis, laryngitis, and tonsillitis, all of which can present with mild cough symptoms. Novel coronavirus infection can cause novel coronavirus pneumonia, which can also cause cough symptoms but is often accompanied by fever as well as malaise, and as the disease progresses, chest tightness, shortness of breath, and dyspnea can also occur. Therefore, a little cough without epidemiological history is basically not considered a novel coronavirus infection, and if there is an epidemiological history, nucleic acid testing and lung CT examinations can be improved for screening.