通过对《中国震例》中所辑宏观异常的统计分析认为，随着震级的增大，震前出现宏观异常的概率逐步增大，震级大的地震震前宏观异常数量也相对较多。宏观异常大多数为短期和临震异常，多数发生在距震中100km 的范围内。在时间上，宏观异常开始时数量较少;随着时间的推进，异常不断增多;越近临震，异常数量越多，直到发震达到高潮。在地域上则表现出始于震中、然后向外围发展、最后震中爆发式增多的特点。

Macroscopic anomalies from“Earthquake Cases in China”are statistically analyzed in the article． The conclusion is as follows: The probability of macroscopic anomalies arises before earthquake increases with magnitude． The larger the earthquake magnitude is，the more the macroscopic anomalies arise． Arise time law of macroscopic anomalies as follows: There are few macroscopic anomalies at the beginning． With time advances the number of macroscopic anomalies increases． Increase of macroscopic anomaly quantity accelerates impending earthquake and reaches climax when earthquake breaks out． The distribution rule of macroscopic anomalies is as follows: macroscopic anomalies arise at epicenter at the beginning and spreads out． Finally macroscopic anomalies explosively arise at the epicenter area．

“十二·五”国家科技支撑计划项目专题“地震监测预警信息集成服务平台建设”( 2012BAK19B04-05 )资助