In order to study the chemistry of leacheate ,and soils under coniferous forest, the samples of precipitation, throughfall and soil leacheate under coniferous forest on the northern slope of the Changbai Mountain were collected and analysed The sample plot studied is situated in the natural reserve on the northern slope of the Changbai Mountains Antu County, Jilin Province, being 1100-1700 m above sea level and a basult plateau covered with volcanic ash and sand in the surface. The mean annual.