用我们提出的数字图像法研究了载流椭球形线圈内部磁场的均匀性. 利用Mathematica 杰出的计算能力和数字绘 图功能，绘制了疏绕旋转椭球形线圈磁场的三维分布图，给出了满足各种指定均匀度所对应的椭球区域，指出了现有文献研 究圆柱形均匀区的不合理性.本文为电磁场均匀性研究提供了一种方便可靠的方法.

The uniformity of the magnetic field inside the current carrying ellipsoid coil is studied by using digital image method. Using the outstanding numerical calculation ability and digital drawing function of  MATHEMATICA，the three-dimensional diagrams of the magnetic field from a sparse winding ellipsoidal coil are 　　plotted. The ellipsoidal regions corresponding to a variety of uniformity are preformed. The irrationality of the cylindrical uniform area in the existing literature is pointed out. A reliable and convenient method for the research on the electromagnetic field uniformity is provided