In order to improve the oreprospecting effect of aeromagnetic survey in "Yijianglianghe" (one large river and two other rivers) region of Tibet, the authors thoroughly studied the 1∶200 000 highprecision aeromagnetic data obtained in this region by China Aero Geophysical Survey and Remote Sensing Center for Land and Resources and made field reconnaissance in areas of significant aeromagnetic anomalies. On such a basis, this paper sums up the correlation between aeromagnetic local anomalies and ore resources and recounts the effect of direct application of aeromagnetic data to oreprospecting work, which is helpful to geological ore-prospecting work in this region.