The polycrystalline (SmxBa1-x)B6 (x=0.2, 0.6, 0.8) bulk cathodes were synthesized by arc plasma and spark plasma sintering (SPS). The phase, crystal structure and grain orientations of sintered bodies were investigated with XRD and EBSD, and the partial properties were tested. The results indicate that the (SmxBa1-x)B6 with high-purity prepared by SPS are random substitution solid solutions which exhibit a single phase structure. The lattice parameters increase with the increase of Ba content. The (SmxBa1-x)B6 sintered bodies with a fine grain structure have high-density and excellent mechanical properties. The (Sm0.2Ba0.8)B6 and (Sm0.8Ba0.2)B6 sintered at 60 MPa and 1400 oC for 5 min form some fiber textures which will enhance the emitting property.