本文基于锁相放大器构建了一套高精度霍尔效应测试系统并进行性能优化，利用标准霍尔效应样品验证系统的测量性能，并通过直流与交流测试对比分析测量精度.实验中选取了三个标准样品，直流测试结果显示，霍尔灵敏度的测量值拟合误差约为0.45%~1.0%.交流测试中，通过改变锁相放大器的频率和电压参数，研究了频率和电流对测试结果的影响，结果表明在低频频率范围内，交流测试的霍尔灵敏度拟合误差低至0.18%.实验结果表明，交流霍尔效应测试方法相较于直流测试具有更高的抗噪声能力和灵敏度，能够更稳定、准确地提取微弱信号.本研究为霍尔效应测量技术的优化提供了系统性参考，同时验证了交流测试方法在高精度信号检测中的潜力.

This paper presents a high-precision Hall effect measurement system utilizing a lock-in amplifier and outlines its performance optimization. The systems measurement accuracy is validated using standard Hall effect samples, with a comparative analysis of results from DC and AC testing methods. Three standard samples are selected for the experiments. In the DC measurement, the fitting errors of the measured Hall sensitivity range from approximately 0.45% to 1.0%. For the AC measurement, the influence of frequency and current on the measurement results is investigated by varying the frequency and voltage parameters of the lock-in amplifier. The results show that, in the low-frequency range, the Hall sensitivity fitting error in the AC measurement is as low as 018%. Experimental findings demonstrate that the AC Hall effect measurement method provides superior noise resistance and sensitivity compared to the DC method, enabling more stable and accurate detection of weak signals. This study offers a systematic reference for optimizing Hall effect measurement technology and highlights the potential of the AC method for high-precision signal detection.