In order to understand the magnetic features of rocks and ores in the region of Xilin Hot and Bairin Left Banner of inner Mongolia, the authors made integrated interpretation of the aeromagnetic anomalies in this area by using ZH-1susceptibility meter designed and developed by China Aero Geophysical Survey and Remote-Sensing Center for Land and Resources. The magnetic susceptibilities of rocks and ores were measured four times in central Inner Mongolia during 2009 to 2011. Based on the statistics and analysis of the actual measured data of magnetic susceptibilities, the authors studied the distribution of magnetic susceptibilities of rocks and ores in this area, and described the magnetic susceptibility features of sedimentary rocks, intrusive rocks, volcanic rocks, metamorphic rocks, ores and wall rocks, and dealt with the relationship between magnetic susceptibilities and aeromagnetic anomalies as well as the relationship between magnetic susceptibilities and ferromagnetic minerals. The results obtained are important for interpretation of magnetic exploration and geological prospecting.