Shaxiporphyry copper gold deposit located in Lujiang county where named as Luzong(Lujiang Zongyang) ore concentrate district,Anhui province,east China. This deposit is the most typical Mesozoic porphyry copper gold deposit in the middle and lower reaches of Yangtze River.In order to expand scale of the deposit,it’s necessary to research metallogenic background to understand ore control factor and metallogenic characteristics,and then provide basical information for mineral exploration.Quartz diorite porphyry is the main ore bearing pluton in Shaxi deposit,so mapping the three dimensional space distribution of the pluton is a key step for prospecting.Based on the 3D inversion of gravity and magnetic, we tried the lithology recognition and successfully portrays the three dimensional morphology of four main types of pluton include ore bearing quartz diorite porphyry, biotite monzonite, quartz diorite porphyry and 〖JP2〗diorite，and we also speculated a canceled mechanism of the volcano. Analysis with magnetotelluric data,we think the formation of Shaxi intrusion complex have more closely relation with deep fault on its west side,maybe 〖JP〗have no direct relation with the formation of Luzong volconic basin. It also proved that Shaxi porphyry copper gold deposit and Luzong porphyrite iron deposit is not the same metallogenic system.Although copper ore can’t generate stronger gravity and magnetic anomaly,but gravity and magnetic data can provide intrusion information to realize prospecting indirectly.According gravity and magnetic 3D inversion and Audio Magnetotelluric results, we find that ore bearing quartz diorite porphyry can character as low magnetic，low density and high resistivity，so where low magnetic and gravity anomalies〖JP〗 in surface，low magnetic body near high density body in 3D inversion model and high resistivity in Audio Magnetoteluric survey are mostly area for mineral exploration.Integrate geophysics exploration and geological interpretation，we believe that the deep part one the west of Shaxi main ore zone, Shahu mountain and Xijiadun which one the east of Fengtai mountain are favorable targets for porphyry copper gold deposit.