The history of the city of Da'an in Jilin Province is closely linked to the administrative and geographical changes in northeast China during the 20th century. It is a relatively young city whose formation was driven by the merger of neighboring counties and its strategic position.
Da'an City was formed in 1958 through the merger of two historic counties—Dalai (大赉) and Anguang (安广). The name "Da'an" is a combination of the first characters of these two counties. Da'an was granted county-level city status on August 30, 1988. In the early Qing Dynasty, this territory was under the jurisdiction of the Shengjing General.
Da'an's development was largely determined by its geographical location and 20th-century political decisions. Its position on the southern bank of the Songhua River and on the border with Heilongjiang Province made it an important transport and administrative hub. Throughout its short history, the city changed its administrative affiliation several times, moving from Liaobei Province to Heilongjiang before finally returning to Jilin Province in 1958.
Historically, the region's economy was closely tied to agriculture, supported by the fertile lands of the river valleys. Since its formation as a unified administrative unit, Da'an has become a center for the surrounding towns and townships. Today, the city's administrative division includes 5 subdistrict offices, 10 towns, and several townships, reflecting its role as an organizing hub for a vast rural area.