Through the establishment of different depths and different physical properties (magnetic susceptibility, density) model of the body, forward of its gravity, ground magnetic response, compared to the current edge enhancement and several commonly used detection methods, multiscale edge detection method that the model Boundary Ability to identify the strongest. Using the method of the Yangtze River metallogenic belt of regional gravity and aeromagnetic data for the edge detection, combined with magnetotelluric profiles and geological data, to establish a structural framework structure of the Yangtze River, the initial determination of the Yangtze River deep fault, major fault Tanlu Distribution system such as fault location, dividing the plate, such as horizontal structure of the volcanic basin boundary. On this basis, analysis of the Yangtze River metallogenic belt of the main ore zone and tectonic framework of the relationship between the formation of the ore district deep background.