Abstract: Zircon U-Pb dating was carried out for four granitoid plutons at Wulian in the north-western part of the Sulu orogenic belt，whose intrusion ages were not known for a long time and thus were often confused with adjacent granitoids of Neoproterozoic age． The present dating yields concordant ages of 123±4 Ma for amphibole monzonite at Dadian, 126±3 Ma for pyroxene monzonite at Qibaoshan，116±4 Ma for miraolitic granite at Wulianshan．and 115±1 Ma for monzonitic granite at Maershan．The results show the occurrence of Early Cretaceous intru sions at～ 115 Ma and ～ 125 Ma in the Sulu orogenic belt，being consistent with those coeval magmatic activity in the Dabie orogenic belt an d the northeastern part of the Sulu orogenic belt．Although these Yanshanian granitoids occur in the Triassic collisional orogen between the Yangtze and North China plates，they belong to post-collisional magmatism and were produced by partial melting of the subducted continental crust．