What is the specific process and what forms should I fill out when I leave the country by international flight for the first time?

Take an international flight and try to arrive at the airport two hours before departure, and go through the check-in formalities at the airline counter and exit formalities such as customs, license inspection and quarantine.

Go through the health and quarantine formalities

If you are a China tourist who has been abroad for more than one year, a valid health certificate is essential.

If you are a passenger going to an epidemic area, you should take necessary immunization vaccination.

border inspection

Foreign passengers should submit your valid passport, certificate and exit registration card, and leave the country within the time limit specified in the valid entry visa;

China visitors (including residents from Hong Kong, Macao and Taiwan) are requested to submit your valid passport, certificate, visa to the country, exit registration card and certificate of going abroad issued by relevant departments.

security check

you need to show: valid ID, plane ticket, boarding pass and airport construction fee. For flight safety, you have to go through the metal detector door, and articles need to be detected by X-ray machine.

Waiting and boarding

After completing the registration formalities, you can wait at the corresponding boarding gate according to the boarding slogan on the boarding pass and listen to the broadcast prompts to board the plane.

Extended information:

International flights are advised to arrive at the airport two hours in advance. First, find the airline counter where you take the plane. If you buy a first class or business class ticket, you can go to the exclusive area to go through the formalities and enjoy the courtesy of waiting in the lounge and boarding in advance.

If you carry a suitcase over 2 inches, you need to check your luggage. Most airlines allow each passenger to check two pieces of luggage not exceeding 23kg in economy class.

if it's a connecting flight, please make sure whether the luggage is directly hung to the destination when checking in; If you don't hang it directly, you need to pick up your luggage at the transit airport and check it in again.

Reference: Baidu Encyclopedia-Outbound Tourism