The distribution of U-Pb ages and their variation features have been comprehensively studied using LA-ICP-MS in-situ isotopic dating of the detrital zircons from sandstones of Zhiluo Formation of the Middle Jurassic and Zhidan Group of the Early Cretaceous from the Hangjinqi area, Ordos basin. Based on the statistic and comparison of isotopic dating results for the plutons in and around this area by previous researchers, along with regional structural background, the provenance of Zhiluo Formation and Zhidan Group and their evolution was also addressed systematically. The main conclusions can be drawn as follows. (1) Zircons from four samples of Zhiluo Formation and two samples of Zhidan Group yielded four peak ages of 270～280 Ma, 320～340 Ma, 1800～2000 Ma, 2300～2500 Ma, with minor zircons from the Zhidan Group having age range from 230 Ma to 240 Ma only appear. (2) The sandstones in the Hangjinqi area mainly sourced from the gneisses, granulites, khondalite and the Hercynian intermediatefelsic intrusive rocks in Yinshan and DaqingshanWulashan, with minor from Langshan and the khondalite from the Jining area. (3) The two ages of 1800～2000 Ma and 2300～2500 Ma may reflect the tectonic thermal event at the basement of the North China Craton. The two age of 270～280 Ma and 320～340 Ma may record two fast subduction events of the PaleoAsian Ocean which occurred during Early Carboniferous to Middle Permian. (4) The 230～240 Ma zircon which appeared in the Zhidan Group indicates that the Indosinian intrusive rock was uplifted to the surface by intensive crustal overthrusting caused by the Yanshan movement in Late Jurassic in the northern margin of Ordos Basin, and denudation further increased provenance from the Indosinian intrusive rock for the study area. (5) Comparison with the samples from the midJurassic Zhiluo Formation shows that peak points of the samples from the lower Cretaceous Zhidan Group at 2300～2500 Ma significantly increase. This probably resulted from relative expansion of the sedimentary boundary in the northern margin of the basin in the Early Cretaceous, thus increasing provenance proportion from the Yinshan Terran.