Abstract-The main problem connected with crystallization of amorphous magnetic materials from the FeSiB(X) group is the increase of their fragility with an increasing content of the crystalline phase. To overcome this defect the possibilities offered by the interference, pulse laser heating of FeSiB ribbons were utilized. A simple interference prismatic system at the output of Nd:YAG laser (8-10ns, 2J, 1064nm) was used. The investigations included the influence of laser radiation energy density, number of laser pulses and their periodical spatial surface arrangement on the crystallization process.