Haidong City, a prefecture-level city in Qinghai Province, is named for its location to the east of Qinghai Lake. Belonging to the Loess Plateau to the Qinghai-Tibet Plateau transition Mosaic zone, is a semi-arid continental climate; With a total area of 13,200 square kilometers, the city has jurisdiction over 2 districts and 4 autonomous counties. According to the seventh census data, as of midnight on November 1, 2020, Haidong's permanent population was 1,358,471.

Haidong has a long history. In the long historical evolution, Hehuang area has entered the developed agricultural civilization from the primitive nomadic state of "living by water and grass". People of all ethnic groups in Hehuang have created a splendid history and culture through joint development and construction on this land. In December 2016, it was listed as the third batch of national comprehensive pilot areas for new urbanization.
In 2017, the GDP of Haidong was 43.6 billion yuan, an increase of 8.4% over the previous year based on comparable prices. In 2020, the regional GDP of Haidong reached 51.46 billion yuan, and its GDP exceeded 50 billion yuan, an increase of 4.7% over 2019.