The difference between new crown incubation period and asymptomatic infection lies in the presence or absence of morbidity. The morbidity period is characterized by a positive new crown nucleic acid test and some patients will show symptoms such as cough, fever and sore throat. New crown incubation period refers to the patient infected with the new crown virus, but not yet onset of disease, the new crown incubation period is generally in 1 day to 14 days, in the incubation period of the patient carries the virus is infectious, but compared to the onset of the period, this period of infectiousness to be weaker, and some of the patients with latent period in the nucleic acid test can be negative, and the need for multiple tests. New crown asymptomatic infected refers to the new coronavirus nucleic acid screening results are positive, this time belongs to the onset of the disease, more contagious, but the patient has not not appeared or did not find their own presence of cough, sore throat, fever, fatigue and other typical symptoms. Therefore, it is recommended to receive the new coronary vaccine in a timely manner, usually do not go to medium-high risk areas and densely populated places, take protective measures when going out, wear a good mask, wash your hands diligently on a daily basis, and if you find that your body is not adapted to the situation, go to the hospital in a timely manner in order to avoid any adverse effects.