Abstract: The disturbance phenomenon of earthquake precursors universally occurs at any time, and the disturbance of different elements is a vital factor affecting the identification of pre­cursory anomalies. Therefore, only eliminating the disturbance of natural factors, based on reducing artificial disturbance as largely as possible, can we greatly increase the credi­bility of earthquake. anomalies. Mainly aimed at soil gas in fault zones, the observational technique has been developed in recent years. The disturbance factors of fault soil-gas measurement as well as the role of fault soil-gas in impending earthquake prediction are systematically summarized in this paper.

Key words: Fault gas, Precursor information, Disturbance factor, Impending prediction