This study takes the exploration and prospecting work area around the Songjiang River Gold Mine as an example, and through the measurement and comparative analysis of the magnetization rate of three borehole cores, it discusses the application effect of core magnetization rate data in exploration and prospecting.The study used the KT-10 portable magnetization rate instrument from Canada to measure 1,858 core samples, combined with the drilling column diagram and magnetization rate curve comparative analysis. The research results show that: 1) The magnetization rate data has a significant marking effect on the location of pyrite ore, and can effectively indicate the ore-bearing alteration zone; 2) The magnetization rate parameter has an auxiliary role in the division of strata, which helps to distinguish different rock types and structural features. The specific quantitative results are as follows: the maximum value of the magnetic susceptibility data of the ZK1 core is 147.727×10?3 (SI), the minimum value is 0.013×10?3 (SI), and the average value is 2.82482×10?3 (SI). In areas with strong mineralization and alteration (such as 49.00-50.00m, 65.50-67.50m, etc.), the magnetic susceptibility values significantly increase, showing a significant abnormal increase compared to normal areas. Quartz veins have significant magnetic differences from other rocks, with a magnetic susceptibility of less than 0.30×10?3 SI and an average of 0.10×10?3 SI, while the magnetic susceptibility of other rocks is generally greater than 1.0×10?3 SI. This study combines the comparison and analysis of borehole bar charts and magnetic susceptibility curves, verified the practical value of magnetization rate data in exploration and prospection, and provided scientific basis for the new round of strategic exploration breakthrough.