航空邮政是邮政的重要组成部分,它是随着科学技术的进步而产生和发展的。从中国早期的航空邮件可以清晰地看出我国航空邮政的发展轨迹。1920年5月7日,中国开通了北京—天津航线,这是中国第一条正式航线,也是中国邮政航空运输的先驱。 Air post is an important part of postal service. It is produced and developed with the progress of science and technology. From China’s early airmail can clearly see the development of China’s aviation postal trajectory. May 7, 1920, China opened the Beijing-Tianjin route, which is China’s first official route and is also a pioneer in China Post’s air transport.