///The significance and action of hydrochemical survey on follow-up for regional anomaly in forest and swamp landscape were researched. It was fond that hydrochemical guide elements to the hydrothermal Pb-Zn, Cu-Au deposits and porphyry copper deposits. The hydrogeochemical survey with lower density (0.2~2 sample/ km2) and less quantity (25 ml per sample) could rapidly reduce useful targets and indicate favorable place forexploration.