Most viral colds in children heal themselves within 1-2 weeks after the onset of the disease, because viral infections are self-limiting, especially the milder viral colds. Children only have symptoms such as nasal congestion, runny nose, sneezing and even mild fever, and they are still in good spirits at this time. If the symptoms of viral cold are heavy, especially caused by influenza virus, there will be complications at this time, such as encephalitis or myocarditis, pneumonia, etc. The condition is relatively heavy, and the treatment time is mostly about 2 weeks.