According to Biot-Savart law, the general expression of magnetic field distribution generated by circular current in space has been calculated in this paper, which further discusses the magnetic field in the plane, the central axis and the far space.

• 摘要直接由毕奥－萨伐尔定律的计算公式，在更为普遍的情况下，计算出了圆形线电流在全空间的磁场分布，并进一步讨论了其在中心轴线上、平面内及远区的磁感应强度。