论述大连地磁台天文方位角的测量原理、方法及观测结果，在地磁台建设未封顶的条件下，能在观测墩直接观测北极星，避免在比测墩进行转角换算等因素增加的观测误差，观测精度提高。

This paper discusses the dalian geomagnetic station of astronomical azimuth measurement principle, method and observation results, due to dalian station under the condition of not capped observation, can direct observation on observation pier Polaris, avoided due to factors such as Angle conversion in than measure pier increase observation error and improve the observation accuracy.