Abstract: The investigation of anomaly of short period geomagnetic variation in China is briefly described in this paper, and different types of anomalies are discovered. The characteristics of the anomalies in Tangshan and its adjacent region, Yunnan province, Hainan island, and Yangtze river delta, and their possible underground origins are also described here. From personal point of view, the features, perspective and difficulties for using short period geomagnetic variation anomaly to investigate the underground conductivity structure and to monitor the earthquake occurrence are briefly mentioned.

Key words: Anomaly of short period geomagnetic variation, Lateral inhomogeneity, Matrix inversion, Digital calculation modelling