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Solidification structures of Bi-Mn alloys solidified in a magnetic field up to 10 T were investigated experiemtally. The solidifi cation of the alloy from melt or semisolid in the magnetic field was carried out. The alignment-retaining behavior of the alignment ofBiMn structure during reheating of the alloy, which was obtained by solidification in the magnetic field, was also investigated. It was found that with different temperatures of starting solidification the structures were varied, namely, in the temperature zone below Curie point a rod-like BiMn grains appeared, in the zone above Curie point and below the liquidus a flake-like BiMn grains appeared, and in the case of completed melt tightly piled flake-like BiMn grains were produced. In all these cases, the grains were aligned and orientated with along the direction of the field. When the alloy with rod-BiMn grains was reheated to below Curie point, the alignment of the BiMn was kept, while reheated to above Curie point, the alignment was destroyed.