本文系统、简要地叙述了八项磁补偿原理。在此基础上阐述了电子磁补偿原理。完整地提供了一套操作简易、补偿精度较高的三架次补偿方法，并给出一个补偿实例。 This article system, briefly described eight magnetic compensation principle. On this basis, elaborated the principle of electronic magnetic compensation. Completely provided a set of simple operation, high compensation accuracy of the three sub-compensation method, and gives a compensation example.