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The present paper investigates generation of the alternating almost zero and strong homogeneous magnetic field for rotary magnetic refrigeration. In order to achieve alternating magnetic field with eight regions, a soft magnetic rod is inserted in the bore. Four high flux density regions (FDR) for magnetization and four low FDR demagnetization of magnetocaloric materials are obtained by the proposed design. The designing procedure step of the four poles and its implementation using 3D finite element simulation is presented. To achieve a predefined requirement, some parts of magnet material are replaced by a high permeability soft magnetic material. The proposed design for the rotary refrigeration magnetic allowing to achieve a good field distribution in the air gap, maximization ratio of high field and minimization ratio of low field volumes to the permanent magnet volume, reduction of the amount of magnet material used, and augmentation of flux density between a low and high field region.