本文在电磁感应法的基础上，通过与亥姆霍兹线圈串联使电容达到谐振的改进方法，测量了不同电容参数下的亥姆霍兹线圈磁场分布，并利用 Origin软件拟合分析了亥姆霍兹线圈磁场与中心轴线位置的关系.实验结果表明，基于电磁感应的改进方法测得的亥姆霍兹线圈磁场精确度在一定程度上均大于传统电磁感应法的测量结果，3 种电容选择中，串联电容为0.099×10-⁶ F时，精确度最高，拟合的亥姆霍兹线圈磁场与中心轴线位置的关系式与理论状态下的公式基本吻合.改进方法的实验效果明显，精确度高，科学可行，是一种值得推广的测量亥姆霍兹线圈磁场的改进方法.

 Based on the electromagnetic induction method，the distribution of Helmholtz coil

magnetic field under different capacitance parameters is measured by the improved method of

achieving resonance with the Helm- holtz coil in series，and the relationship between the magnetic

field of Helmholtz coil and the position of central axis is analyzed by using Origin software. The

experimental results show that the accuracy of the magnetic field of Helm- holtz coil measured by

the improved method is higher than that by the traditional electromagnetic induction method to a

certain extent. Among the three capacitor options，when the series capacitance is 0.099×10-⁶ F，the

accuracy is the highest. The fitted relationship between the magnetic field of Helmholtz coil and the

position of the central ax- is is basically consistent with the theoretical formula. The experimental effect of the improved method is obvious，the accuracy is high，and it is scientifically feasible. It is an improved method for measuring the magnetic field of Helm- holtz coils that is worth popularizing.