The utility model belongs to the field of perforating bullets, in particular relates to an ultra-deep penetrable perforating bullet which comprises a frustum section as an upper part and a projectile body of a cylindrical section as a lower part, wherein a cylindrical positioning cam and a pressure pin are arranged at the upper end of the frustum section. The ultra-deep penetrable perforating bullet is characterized in that a cylindrical positioning ring is mounted at the lower end of the cylindrical section. In the utility model, the arrangement of the positioning ring at the lower end of the cylindrical section increases the height of the perforating bullet so as to fully utilize a space in a perforating gun and fully exert the penetrating depth of the perforating bullet. The utility model has the advantages of simple and reasonable structure, convenient processing, cost reduction and firm fixation of the projectile body.