The invention discloses a bar molding machine extrusion molding bar head. The bar molding machine extrusion molding bar head comprises a bar molding machine bar head, a pre-pressed through hole is formed in the center position of the bar molding machine bar head in the axial direction, and the hole diameter of the inlet end of the pre-pressed through hole is slightly larger than that of the outletend of the pre-pressed through hole. A bar molding machine extending head is further coaxially arranged at the outlet end of the bar molding machine bar head, and the bar molding machine extending head is fixedly arranged at the outlet end of the bar molding machine bar head in an attaching mode. A compression through hole is formed in the center position of the bar molding machine extending headin the axial direction, the compression through hole is sequentially composed of a horn-shaped compression hole and a forming hole with the equal diameter; the inlet end of the horn-shaped compression hole is arranged at the outlet end of the bar molding machine bar head in an attaching and matched mode and is adjacent to the outlet end of the bar molding machine bar head, the inlet end of the horn-shaped compression hole and the outlet end of the pre-pressed through hole are arranged in an equal diameter mode, and the outlet end of the compression hole and the forming hole are arranged in anequal diameter mode. The bar molding machine extrusion molding bar head uses own precompression section and compression setting section to extrude and form fine pulverized crude opium and tobacco dust, is simple in structure, convenient in processing and low in operating cost, and reduces the operating cost and maintenance cost.