In the anistropic magnetic medium under the condition of magnetic permeability 11unequal to 33 , the magnetic field on axis line of current - carrying coil and that inside current - carrying solenoid can be calculated by applying biot - savart law of that medium . as the condition of their service is restricted , it is necessary to derive the magnetic field on axial line of current - carrying coil and that inside current - carrying solenod under more general condition of 11unequal to 33 . on the basis of the magnetic field on axial line of current - carrying coil in anisotropic magnetic medium under the derived condition of 11unequal to 33 , the authors obtain the magnetic field on axial line of current - carrying solenoid in anisotropic magnetic medium under general condition of 11unequal to 33 . the result shows a wider applicable coverage 利用毕奥-萨伐尔定律，并在磁导率11 = 33的条件下，可求出各向异性磁介质中载流圆线圈轴线上的磁场，以及载流直螺线管内部的磁场.显然，其使用条件受到限制.为此，有必要导出在11 33的更一般情况下，各向异性磁介质中载流圆线圈轴线上磁场和载流直螺线管内部的磁场.在已导出11 33及各向异性磁介质中载流圆线圈轴线上磁场的基础上，求出一般情况下各向异性磁介质中载流圆线圈轴线上的磁场，使其结果适用范围更广
