本文以Fe－Ni软磁合金为研究对象，从晶体缺陷及内应力两方面分析了退火参数对最大磁导率影响的机理，指出位错、晶界以及晶格畸变应力是影响最大磁导率的主要因素。 In this paper, the mechanism of the influence of annealing parameters on the maximum permeability is analyzed from two aspects of crystal defects and internal stress. The dislocations, grain boundaries and lattice distortion stresses are the most important factors that influence the maximum permeability The main factor.