1874, 10 year 10 9 October, representatives of 22 countries signed the Berne Treaty, the first international postal treaty, and the Universal Postal Union was born. Due to the rapid increase in the number of participating countries, the Universal Postal Union officially changed its name to the Universal Postal Union in 1878, and became a specialized agency of the United Nations from 1948. To commemorate the establishment of the Universal Postal Union, the 16 Universal Postal Union Congress held in Tokyo, Japan in 1969 passed a resolution to designate September 10 as Universal Postal Union Day.

1984, at the19th session of the Universal Postal Union Congress held in Hamburg, Germany, a resolution was passed to rename Universal Postal Day "World Postal Day". The purpose of establishing World Postal Day is to publicize the important role of postal services in the cultural, economic and social development of various countries and the work and achievements of the Universal Postal Union to the competent departments of member States and the general public, so as to promote the development of the world postal industry. The Universal Postal Union has 190 members (September 2004).

China joined the UPU in 19 14. 199 From August 23rd to September 23rd, China successfully held the 22nd Universal Postal Union Congress. On the recommendation of the government of China, Huang was elected as the Deputy Director-General of the International Bureau of the Universal Postal Union at the 23rd Universal Postal Congress held in Bucharest from September 6th to 10 5th this year. This is the first time that a candidate from China and even the Asia-Pacific region has been elected to a senior leadership position in this specialized agency of the United Nations.

China began to publicize and commemorate World Post Day from 198 1.