天津地区地磁台站多数建于上世纪七十年代，受当时技术条件和材料磁性控制等因素限制，很难保障现有观测仪器的正常运行。为此，天津市地震局利用天津市地震安全基础工程，对区域地磁台站的地磁观测室进行改造，拆除原有混凝土浇筑的观测墩及墩基，安装无磁大理石观测墩，拆除原屋顶新建木结构屋顶，对室内进行保温处理。在施工过程中，建筑材料及施工环节的磁性控制是磁房改造的关键环节。

The majority of geomagnetic stations were built in the seventies of last century in Tianjin region, due to the constraints of technical conditions and materials magnetic control it was difficult to guarantee the normal operation of the existing observation instruments. Therefore, according to the Tianjin earthquake safety foundation engineering of the earthquake administration of Tianjin municipality, transform the geomagnetic observation room of the regional geomagnetic station, removal original concrete observation pier and pier base, install the non-magnetic marble observation pier, and removal the original roof, install a new wood structure roof and the indoor thermal insulation. During the construction process, the magnetic control of building materials and construction is the key of the geomagnetic room transformation.