The presence of vomiting is not necessarily a novel coronavirus infection. Some patients may experience vomiting after a novel coronavirus infection, and may also have nausea, mild nausea, fatigue, loss of energy, loss of appetite, and diarrhea as their first symptoms. If people with a history of close contact with novel coronavirus-infected or suspected virus-infected patients show symptoms such as vomiting, they need to be alerted. If fever, malaise, chest tightness and difficulty in breathing appear after a few days of self-isolation, they need to go to the fever clinics in each region for examination to confirm the diagnosis. Pay attention to good personal protection on the way, while maintaining a certain distance from others to avoid cross-infection.