The effects of B content on the magnetic and electrical properties and crystallization behavior of amorphous alloys based on FeZr are studied in this paper, and compared with amorphous FeB alloys. The reasons of the average magnetic moment per FeZr atoms. μFeZr and Curie temperatures Tc increase with increasing B content are explained. Finally, the scattering mechanisms of electrical resistivity at various temperatures and effects of B or Zr element on the crystallization temperature in these alloys are discussed.