With the increasing number of confirmed cases abroad, international cooperation should be strengthened to communicate with each other, share experiences and establish joint prevention and control, which is the key to prevent exported cases from becoming imported cases. Currently, Customs conducts temperature monitoring and screening of all people entering and leaving the country. If a person with suspected symptoms is found or comes from a country or region with a more serious epidemic, epidemiological screening, medical screening, and laboratory testing should be strictly implemented for screening. During the outbreak, the risk of contracting the new coronavirus by public transportation, such as airplanes, is still higher regardless of whether you are at home or abroad, and home is still the best protective measure. Everyone should remain vigilant, strengthen self-prevention, and decide carefully on travel plans.