By employing the conclusion from textbook and taking the square current-carrying coil as four consecutive current-carrying wires,the general expression of the magnetic field profile is derived,and the distribution characteristics of the magnetic field profile on the square coil plane are discussed.

The magnetic induction of the coil of rectangular carrying current;

in the light of anisotropic bit-savart law that has been given, the authors solve the spatial magnetic field of rectangular charge-carried coil in anisotropic magnetic medium.

Under the two assumed circumstances, the problem of magnetic field distribution produced by globular current carrying coil at its central axis is discussed , and under one of them,the problem of divergence arises.