The Jingangtai Formation constitutes an important component part of the Beihuaiyang Late Mesozoic volcanic rock belt. In this paper, the zircon U-Pb age of an ignimbrite sample was determined, and a trachyandesite sample from the Jingangtai Formation and an orthophyre sample collected near the volcanic rocks were dated by LA-ICP-MS method. According to the results, the ages of the 3 sample are almost identical within the error range, which means that the volcanic rocks of Jingangtai Formation and the orthophyre were formed in a very short period. Meanwhile, these ages are very close to the concentrated ages of the Cretaceous magmation in Sulu-Dabie orogen, which implies that they might have been generated under the same dynamic condition.