There are few outcrops of granitic intrusions in the Ningwu basin, composed mainly of quartz monzonite and granite. Few works have been done on these granitic intrusions. This paper presents a detail study of some granitic intrusions by means of LA-ICPMS zircon dating, Lu-Hf isotope of zircon and Sr-Nd isotope analyses. The chronology results show that the ages of Niujishan pluton (128.0±1.7 Ma), Huoli pluton (126.4±1.3 Ma), Gushan pluton (sampling from drill core in the Gushan iron deposit, 129.8±1.6 Ma), Xiaoshishan pluton (130.1±1.5Ma) and Niangniangshan pluton (128.3±1.8Ma), which indicates the granitic intrusive activities took place in 126~130Ma, belong to the early Cretaceous. The ages are corresponding with those of the Gushan and Niangniangshan Formations volcanic rocks and the mineralization ages of the porphyry iron deposits in the Ningwu basin. The Nd-Sr isotope results suggest that the granitic intrusions derived from the metasomatic mantle, compositionally closing to the EMI, which has relationship with the subduction of the pacific plate. TheεHf（t）of the ziron from the Gushan pluton is 7.644~13.910, implies that the more percentage of mantle composition is favorable for the iron mineralization. The granitic plutons in the Ningwu basin are the products of extensional geodynamic setting, which responded by the lithospheric thinning in the eastern of China.