It is possible for asymptomatic infected people to return to positive, but not all of them do. Generally, asymptomatic infected people are those who suffer from a certain disease but have no clinical manifestations. It is also contagious and may return to positive after healing, depending on the individual. After the resumption of Yang need to pay attention. It is recommended that patients go to the hospital immediately for relevant examinations, so as not to delay the condition. In daily life, you need to pay attention to rest and develop good habits. In terms of diet, a light diet is the main focus, avoid spicy, stimulating food, usually can increase some exercise. In case of patients with new crown re-positive, they should immediately go to the fever clinic for nucleic acid test and cooperate with the prevention and control department to the designated place for isolation and treatment.