Due to the subduction of the Pacific plate in Mesozoic Era, severe volcanic-subvolcanic activities took place in the Daxinganling region. On the tectonic background of Mesozoic volcanic fault depression, amounts of Pb-Zn polymetal mineralization occur on the margin of the fault depression and the in the connecting belt between depression and uplift. The deposits are controlled by a series of volcanic-subvolcanic hypabyssal intrusive. The mineralization is formed nearly the same as or slightly later than the volcanic-subvolcanic activities.