A Qin Town has a long history and was a chiefdom in ancient times. "Zina" is a Yi language, "Qi" is a village, and "Na" is fertile, which means fertile land. At the end of Qing Dynasty and the beginning of Ming Dynasty, A Qin Dam was divided into three covenants: Manchu, A Qin and Liuguan. In the Republic of China, it was called Yunshan Town (named after Yuntai Mountain in the east); 1950 to 1957 is the third district of Yongsheng county; 1958 indicates the period of the receiving area; 1960 is called A Qin commune; 1962 indicates the period of the receiving area; 1968 Na commune; 1984, the establishment of district offices during the district and township system reform; From 1988, the district changed to the township, and it has been set up to now.