The invention relates to a preparation device and a production method for a sulfur electrode material. The sulfur electrode material preparation device comprises a mixer, a sulfur storage device, a heating system and a vacuum system, wherein the sulfur storage device is as high as the mixer body; a porous stainless steel tube is a trapezoidal stainless tube which is wide in bottom and narrow in top; holes which are 1-20 microns in hole diameter and 2-10/square centimeters in hole count are symmetrically distributed in the surface of the stainless steel tube; the electrode material is a porous oxide electrode material dispersed with elemental sulfur; particles of the porous oxide electrode material are 10-500 nm; the porous oxide electrode material is one of hollow vanadium pentoxide nano powder, hollow nickel-cobalt-manganese-lithium oxide nano powder, hollow lithium manganate nano powder and hollow nickel-cobalt-lithium oxide nano powder; elemental sulfur accounts for 20-70% (in mass fraction) of the sulfur electrode material; 1-20% (in mass fraction) conductive polymer coats on the surface layer of the sulfur electrode material; the conductive polymer is one of polypyrrole, polyaniline, polythiophene and polyacrylonitrile. While being applied to a positive electrode of a lithium sulfur battery, the composite material has a high specific capacity and excellent circulating performance, and has a good application prospect in the battery field.