In May, 1996, institutional reform, from the original Qianqiu Township, Yanzicheng Township, Xinchang Township, Zhongba Township 1 township 3 townships merged into Yanzicheng Township. Jurisdiction of 28 villages, 186 village groups, 6,810 households, 27,400 people, the town has a total area of 227 square kilometers.
In January 2002, again the township institutional reform, the original Zhuba River Township of Linchunping village to Yan Ziqin township jurisdiction, Yan Ziqin a total area of 230 square kilometers. 2002, the second half of the township merged 4 villages, 11 villagers group. After the merger, Yanzicheng town has 25 villages, 1 community neighborhood committee, 181 village groups. After the withdrawal of the district and township township, the rapid development of social and economic undertakings.