Abstract The Jiangligou granitic pluton that is Monzonitic granite distributed in the northern part of West Qinling and intruding into the Daguanshan Formation is consist mainly of plagioclase， quartz，potassium feldspar，biotite. Major and trace elements studies show that the pluton is characterized by typical Himalaya granite features with SiO2=71.76% ~ 75.86%，Al2O3=11.67% ~ 14.84%，MgO=0.35% ~ 0.70%，Sr=58×10-6~223×10-6，Y=1.2×10-6~16.1×10-6，Yb=1.21×10-6~ 1.76×10-6.Rittmann index is between 1.42 and 2.08 and belongs to high K calc-alkaline series in the K2O-SiO2 diagram . The research also showed that the pluton is characterized with A / CNK=1.05~1.1，suggesting that the Jiangligou pluton belongs to the Peraluminous Granites. Primitive manlte normalized trace elements patterns reveal that large ion lithophile elements ( LILE ) K，Th，Rb，Ba is enriched，but strength element ( HFSE ) Nb，P，Ti，Y，Yb are depleted compared with adjacent elements. chondrite-normalized REE distribution pattern show an strong enriched LREE distribution and a relative depleted of HREE distribution with obviously Eu negative anomaly(LREE/HREE=6.3~16.2，(La/Yb)N =4.9~17.4，δEu=0.38~0.66). CL images and LA-ICP-MS isotopic dating show that zircon U-Pb isotopic age of the Jiangligou granitic pluton is 264.0 ±1.4Ma belong to Middle Permian. Based on the previous studies and the analysis revealed Jiangligou granitic pluton was formed in the thickened crust envitonment and was associated with the result of the subduction and collision of the distance effect in the closing process of A’nyemaqen oceanic basin，making extrusion effect in this area . It causes the crust thickness increase as temperature and provides dynamic conditions and magmatic activity space for deep crustal material remelting emplacement in the area.