The pre-symptoms of the new coronavirus infection can not be generalized, the common ones include cough, fever, diarrhea, etc., and some patients have no symptoms. After infection, most patients will have respiratory symptoms, such as cough, fever, etc., and the cough is often mainly dry cough, fever is mainly low fever, and some patients will have nasal congestion, runny nose, and other symptoms similar to the flu. A small number of patients with gastrointestinal manifestations as the first symptoms, such as abdominal pain, diarrhea, etc., at this time need to be identified with gastrointestinal diseases. There are also a few patients who experience loss of taste and smell in the early stage of virus infection, which may be related to the virus’ attack on the taste and smell nerves. For some young people with strong immunity, they may not show any symptoms after infection, and these patients are also known as asymptomatic infections. New Coronavirus is highly contagious, so it is important to take appropriate precautions in daily life, wear masks, and wash and disinfect your hands frequently to avoid infection with the virus.