介绍琼中地震台子午项目地磁房建设建筑材料磁性检测，与施工过程中磁性跟踪检测方法及保温措施，实践证明，方法切实有效，可为其他地磁台站建设提供经验。

This paper recommends that during building the Geomagnetic room of the Meridional project in QiongZhong Station,how to proceed magnetic testing and the methods of proceeding the Magnetic tracking detection of construction,and some insulation measures. Practices have proven that all these processes are effective,and they can be distilled that offer a set of lessons for constructing the Geomagnetic room.