The utility model relates to a sublimation and refinement device, in particular to a sublimation and refinement device applicable to pyromellitic dianhydride, which aims to solve the problems of a conventional pyromellitic dianhydride sublimation and refinement method that the refinement accuracy is low, more impurities exist and the method is not suitable for batch manufacturing. The sublimation and refinement device applicable to pyromellitic dianhydride is characterized in that one end of a first thermocouple is inserted into a crystallization chamber; one ends of a plurality of cylindrical pipes are all open ends; the other ends of the plurality of the cylindrical pipes are all closed ends; the plurality of the cylindrical pipes are arranged horizontally; the open ends of the plurality of the cylindrical pipes are fixedly mounted on the partition board from top to bottom sequentially; the closed ends of the plurality of the cylindrical pipes are positioned in a heating chamber; the plurality of the cylindrical pipe are communicated with the crystallization chamber; one end of a first fused salt heating rod is vertically inserted into the heating chamber and is close to the closed ends of the cylindrical pipes; one end of a second fused salt heating rod is horizontally inserted into the bottom of the heating chamber; one end of the second thermocouple is horizontally inserted to the heating chamber; and a feeding port is formed at the upper end of the heating chamber. The sublimation and refinement device applicable to pyromellitic dianhydride is used for the sublimation and refinement of pyromellitic dianhydride.