According to relevant regulations, drunk travelers are not allowed to get on board civil airliners. It is mainly for the passenger’s own safety considerations. First of all, it is unfavorable for the health of passengers to get on board after drinking. The high-altitude flight may easily cause cardiovascular and cerebrovascular diseases to the drunk passengers. Secondly, drunk passengers may behave disorderly and cannot control their own behavior, which will pose a hidden danger to the safety of other passengers in the cabin. Therefore, if passengers plan to travel by plane, they should drink alcohol with caution. If any traveler has already drunk a lot of alcohol, please contact the airport medical office and the doctor will check whether the traveler can get on board or help the traveler alleviate a hangover.