The utility model relates to a dedicated multilevel spearhead for downhole perforation, and adopts the technical scheme as follows: a protrusion is arranged at the top of a plug-in head, a groove is formed in the lower part of the plug-in head, a selectively-electrifying device is arranged inside the groove, an upper pedestal and a lower pedestal are connected in sequence downward from the open end of the groove, a lower insulating gasket is arranged between the upper pedestal and the lower pedestal, an insulation sheath is wrapped outside the part below the protrusion of the plug-in head and outside the upper and the lower pedestals, a central hole is formed inside the upper pedestal, an insulating layer is coated on the inner wall of the central hole, a conducting rod with raised edges is inserted in the central hole, an upper insulating gasket is arranged between the upper raised edge of the conducting rod and the upper pedestal, two or more pin holes are symmetrically distributed in the axial direction on the lower pedestal and the lower insulating gasket, insulating layers are coated on the inner walls of the pin holes, and conductive pins are inserted in the pin holes. The utility model is significantly characterized in that the power is transferred from the upper-level devices to the lower-level devices by the multilevel spearhead to ignite the lower perforation detonator and thus to achieve the perforation purpose.