The hydrothermal type Pb-Zn-Cu deposits are closely related to the volcanic apparatus in Derbur area of Inner Mongolia.The authors found and delineated a classic and relatively large-size volcanic apparatus by studying the 1∶50 000 high-precision aero-geophysical data.It is thought that the prospecting potential of this area is promising.The result obtained can guide the ground prospecting work and speed up the mineral resources exploitation work.