本文基于研制的一套亥姆霍兹线圈轴平面磁场测量装置，结合PASCO实验平台，利用二维磁传感器测量轴平面上任意一点三维磁场分量. 通过MATLAB编程计算亥姆霍兹线圈磁场，获得的数值计算结果与实验测量数据进行对比分析显示误差均小于3.0%. 本实验装置精确度高，通过精细的实验测量可验证数值计算的结果. 本文的工作进一步优化和拓展了大学物理实验内容.

 This paper is based on a set of Helmholtz coil axial plane magnetic field measurement device developed, combined with the PASCO experimental platform, using a two-dimensional magnetic sensor to measure the three-dimensional magnetic field component of any point on the axial plane. The magnetic field of Helmholtz coil is calculated through MATLAB programming. The comparison between the numerical calculation results and the experimental measurement data shows that the error is less than 3.0%. This experimental device has high accuracy, and the numerical calculation results can be verified by precise experimental measurement. The work in this paper further optimizes and expands the content of university physics experiments.