对于有限长螺线管的磁场，本刊曾经发表过一种计算方法，它给出了级数形式的结果.然而作者对级数的收敛性未作分析，因而没有发现其存在发散问题.本文分析发现，该文的级数结果在圆柱面(包括螺线管圆柱面及其延长部分) 外处处收敛，而在圆柱面内则不然.重新计算了圆柱面内的结果，并验证了圆柱面两侧的边界条件.

 One approach to the magnetic field of a finite solenoid was published in this journal, which give the results in terms of infinite series. However, the convergence of the series was not examined, thus some divergence issues was overlooked. We reexamine the series and find that it is convergent everywhere outside the cylinder surface (the cylinder surface of the solenoid extended to infinity) but not inside it. The results inside the cylinder surface are recalculated, and the boundary conditions on the cylinder surface are verified.