Abstract: Based on the single funnel ore drawing test, the developing trend of the shape of the release ellipsoid is analyzed, and the core index such as axial deviation angle and eccentricity rate of the final release ellipsoid are determined.Based on the three-dimensional ore drawing model, the ore drawing method is optimized by comparing the index of return to lean and difference between two ore drawing methods:no dilution and low dilution.Based on the physical test results, using the similar physical test method, experience analogy method, theoretical analysis method, the method of the large span ellipsoid under the arrangement of stope structure parameters optimization, determine the route under the 20 m sublevel height interval, caved ore interval, interval, and the mode of ore mining and other key parameters and process.The process and results of the optimization of stope structure parameters can provide technical references for the design of similar mine parameters.