Airmail stamps were originally a special kind of stamps, which were specially used for airmail. However, in many countries, in order to facilitate management, reduce the return of letters and avoid lack of funds, it is generally no longer mandatory to affix airmail stamps to ordinary letters, while other stamps can also be sent by airmail.

Most airmail stamps indicate the type of ticket. Latin American countries are mostly Spanish "CORREOAEREO" and "SERVICIOAEREO", while English-speaking countries are English "AIRMAIL" and French "PARAVION" or "POSTEAERIENNE".

The patterns of airmail stamps are mostly related to aviation. One is printed with airplanes, airships, balloons, propellers, airplane inventors and famous pilots. The other kind takes birds as pictures, and there are raptors who are good at flying high: eagles and eagles; There are graceful cranes, storks and herons; There are migratory birds that are not afraid to travel long distances: geese, swallows and swans; There are vigorous and agile seabirds: albatross, seagull and petrel; Naturally, there are messengers-pigeons. The third category is that God flies for nine days, such as Mercury. New contents have been added, such as rockets, missiles, artificial earth satellites and space shuttles. But stamps with airplane designs are not necessarily airmail stamps. For example, in 19 12, the United States issued the first airplane map stamp in the world, which was specially used to deliver parcels. On the other hand, not all airmail stamps are painted with flight-related patterns, especially those of Latin American countries. The issuance of airmail stamps has its tradition in most countries: Latin American countries issue the most airmail stamps, and Venezuela and Nicaragua have more than 1000 kinds. France and former French colonial countries attach importance to the issuance of airmail stamps; However, Britain and former British colonial countries are rare. Air stamps from the United States, the Soviet Union, France, Italy, Spain and other countries are the most popular among stamp collectors, because the topics are rigorous, mostly related to aviation and memorable; Unique design and exquisite printing.

China is one of the countries that issued airmail stamps earlier. The first set of airmail stamps was issued at 192 1, with a full set of 5 stamps. There are 5 groups of airmail stamps officially printed in old China, ***4 1. New China issued the first set of five stamps on May 195 1 and the second set of four stamps on September 20th, 1957. These stamps are all painted with pictures of airplanes and the words "airmail stamps".