With practical examples,the present paper has expounded the geochemical prospecting method for investigating and verifying hydrochemical anomalies in the basalt-covered area of southern Jilin.An integrated study of the available geological data shows that geological conditions of the Yanjiangcun and Malugou hydrochemical anomalous districts in southem Jilin are favorable for mineralization.Combined with microlandscape characteristics and applying mercury-vapor survey,the authors delineated the extension of the fault structural zone in an area of 2km² within the Yanjiang anomalous district.Rock profile and soil survey show that the structure has experienced hydrothermal mineralization and the mineralized body is buried at a rather great depth.On the basis of soil survey,the target area for verification was selected through optimization,and then a gold mineralized body 30m in thickness was revealed by drilling below the depth of 620m,with the highest Au content being 1.5g/T.In the Malugou hydrochemical anomalous district,follow-up for anomaly was conducted by means of stream sediment survey and,as a result,the"target area"for ore prospecting was rapidly reduced. Further follow -up work in the"target area"by means of heavy mineral survey led to the discovery of gold mineralization source.On such a basis,a metallogenic prospect area in which a volcanic epithermal gold deposit is likely to be found was delineated through large-scale soil survey combined with rock survey.