In geomagnetic observation,when obsolute magnituote instrument,relative record magnetic variometer and aid are broken down,and how to determinate and eliminate these troubles quickly are given in this paper.

• 在地磁观测中 ,当绝对观测磁力仪、相对记录磁变仪、辅助设备等发生故障以及观测所得结果不准或其它问题时 ,将如何快速判别及排除 ,作了较详细的叙述