Abstract:This paper was based on the field investigation of the Ganzi earthquake of June 16, 1982. There are three parts in the paper. The first part deals with source parameters, epicentral intensity, damage and deaths and injuries. The second part mainly describes the characteristics of the medium and long term premonitory anomalies. The third part discusses anomalous background, sensitive points, the density of Station distribution, instruments, main and secondary methods, synthetic prediction and so on. What the paper gives coucd be treated as an example in the study of premonitory anomalies and earthquake prediction.