Abstract: The low-lying saline-alkali wetland is one of main type of low yield fields in Huang-Huai-Hai Plain. Ac-cording to the resource of water, quantity of heat and wet-land, the lowland was integratedly treated and utilized withthe model of digging fish ponds and building raised fields. Bymonitoring the moving of the salt and wdter,the engineeringsolved the question about preveting secondary saline-alkali of wetland.The monitoring results showed that soil organicmatter was increased from 0.582%to0. 989%, total N and Pcontents were increased from 0.02% and0.14% to 0.061%and 0.158% separately, and soil salt content was reducedfrom 0.50-0.92% to 0.06-0.29% year by year in the re-formed land.The integrated environmental benefit indicatedthat the original land condition was soundly transformed and the planned goal of primary tretment and utilization wasachieved.