本文总结了海城地震的中期、短期和临震阶段的地倾斜异常特征。指出中期异常的特征是破坏年变化规律,异常时间在半年以上,幅度可达几个角秒。短期异常的特征是打结和转向,异常时间一至二个月。临震异常的特征是破坏日变化规律,异常时间在震前几天,且仅在震中附近才有明显反应。 This paper summarizes the characteristics of ground tilt anomalies in the mid-term, short-term and epicontinental phases of the Haicheng earthquake. It is pointed out that the characteristic of mid-term anomalies is to destroy the law of annual variation, and the anomalous time is more than six months, reaching a few angular seconds. Short-term abnormalities are characterized by knotting and turning, with anomalous time of one to two months. The characteristics of the climatic anomaly are the destruction of the daily variation rule. The anomalous time is only a few days before the earthquake, and only obvious reaction occurs near the epicenter.