Barrow is located on the arctic coastal plain at the northeast Alaska (71°20'N.156°40'W),where Permafrost is well developed with a mean annual temperature of -12.6℃.Therefore, the modern environmental processes are dominated by physical weathering (freezing and thawing) and segmentation which infuence on the characteristic of present tundra environmental geochemistry.Some 35 samples of water, soil and snow were collected from sea, lagoon, lake.stream and bog at Barrow in August-September, 1994.The preliminary results are as follows:(1) Chemical and bio-chemical processes also existed in such an extremely cold region, which may be caused by higher summer temperature.(2) H⁺ is a typomorphic element appeared in the Arctic tundra environment.(3) The major positive and negative ions are K⁺⁺Na⁺ and Cl^- in the aquatic environment, appearing in a distribution roder of decreasing from ocean to land, that is:stream water2+ is extremely high which ranges from 73.87% to 90.41%,and the contents of rare elements.rare-earth elements and trace elements are relatively low.However, the contents of Hg, Cd, Cr and comparatively high.