地面磁通门磁力仪是我国70年代出现的一种新型仪器，目前很多单位已开始使用。我们通过一段时间的使用，初步摸索出一些维修经验，现介绍如下。一、仪器的维护为了保证仪器的准确度和稳定性，在仪器经过大修之后，每年出队生产之前，或者发现仪器工作不正常时，应对整机指标进行检查。 Ground fluxgate magnetometer is a new type of instrument appeared in China in the 1970s, many units have begun to use. We through a period of use, preliminary exploration of some maintenance experience, are introduced below. First, the maintenance of equipment In order to ensure the accuracy and stability of the instrument, after the instrument overhaul, each year before the de-team production, or found that the instrument is not working properly, the whole machine should be checked indicators.