In Order to improve soil fertility and crop production, improved rice paddy soda saline soils for differentyears were collected from western Jilin Province as samples, the unimproved grassland soil was taken as control inthis study. The enzyme activities and soil nutrient content were determined, the variation of soil enzymes dynamicchanges in different planting years of topsoil and the relationship between enzymes and soil nutrients were analyzed.The results were as follows: with increasing of planting years, compared with the control, the p H tended to decline,the organic matter, the alkali-hydrolyzable N（without 1Y） and the available phosphorus in the top soil tended to rise,the available potassium has no special variation. In different planting years, catalase and peroxidase activities overalltended to decline, but urease and sucrese activities tended to rise. The influence of the planting years on soil nutri-ents and enzyme activities has some regularity. There was a highly significant correlation or significant correlationamong alkali-hydrolyzable N, available phosphorus, organic matter and p H. There was a highly significant correla-tion or significant correlation among catalase, peroxidase, urease and sucrese. The correlation among catalase, peroxi-dase, urease,sucrese and organic matter, alkali-hydrolyzable N, available phosphorus reached significant level.