As the study object, on the basis of detailed field geological survey, collected samples and performed indoor rock appraisal,author made zircon LA-MC-ICP-MS U-Pb dating and geochemical investigation in Linghou copper mine, west Zhejing province. The Zircon is a typical magmatic zircon, which has obvious band structure and Th/U ratio is high（the average is 0.41）. LA-MC-ICP-MS dating result of the granodiorite-porphyry is 169.9±1.4Ma(MSWD=0.0095). The content of SiO2 is in the range of 59.95%~70.46％, belonging to neutral to slightly acidic serious. δ<3.3(0.1~2.1), the rocks are of kalium alkaline series. KO2/NaO2 ratio is higher than 1, rich in potassium,the rocks belong to peraluminous series; Rich in high field-strength elements, such as La,U and large ion lithophile elements, such as K, Ba, laching in Sr、Nb、Ta, which making it clear that rocks post in island arc; The value of Sr/Y ratio is high(5.89~67.7)and Rb/Sr is low(0.53~1.81); REE distribution curve is significantly rightly oblique, LREE and HREE different Highly. REE values range from 54.3×10-6~138×10-6, rich in LREE and lose in HREE, a high degree of fractionation; Eu abnomal value ranges from o.85~1.04 and Ce abnormal value ranges from 0.84~0.94, which are not obvious; All the characteristics show that the rock geochemical characteristics, the type of magma and tectonic setting of Ore-bearing granite diorite porphyry in linghou is same as coevality Dexing’s. The rocks are high-K calc-alkaline I-type granite of crust-mantle mixed source in continental marginal arc; Evidence suggest that Linghou even west zhejiang privince has the pritential of Prospecting porphyry copper deposits.