Using cathodoluminescence（CL） imaging and LA-ICP-MS in site U-Pb isotope dating technigue, this paper presents zircon U-Pb isotope analysis for the mesozoic detrital zircons in upper Triassic Xujiahe group and middle Jurassic Shangshaximiao group from the Northeastern Sichuan foreland basin. The result reveals multiple types of zircon and group-deviding characteristics of age. The detrital zircon ages value of upper Triassic Xujiahe group is divided into 5 groups: 213~283Ma, 312~448Ma, 694~710Ma, 1430~1988Ma and 2133~2708Ma; The detrital zircon ages value of middle Jurassic Shangshaximiao group is divided into 7 groups: 163~194Ma, 213~274Ma, 404Ma, 712Ma, 1742~1972Ma, 2116~2594Ma and 3025~3140Ma. Studies have shown Northeastern Sichuan foreland basin sediments mainly involve Yanshan intra-continental orogenic magmatism erosion material in Qinling orogenic belt(163~194Ma), late Hercynian-Indosinian Qinling subduction-collision magmatism erosion material (213~283Ma;213~274Ma), the subduction-tectonic magmatic material in Northern Qinling orogenic belt (312~448Ma; 404Ma), the Rodinia super-continent breakup substances in Nanhua (694~710Ma; 712Ma), Qinling orogenic belt folded basement (1430~1988Ma; 1742~1972Ma) and Qinling orogenic belt metamorphic basement (2133~2708Ma; 2116~2594Ma, 3025~3140Ma). Based on the existing paleocurrent and regional geological data, there exists a better coupling relationship between the Qinling orogenic belt and Northeastern Sichuan foreland basin.