The Tutuan River wetland is one of the important wetlands in Rizhao City,Shandong.Comprehensive evaluation of its function was studied for essking a comprehensive remedy to current geological and environmental problems.Ecological function, ecosystem characteristics,environmental problems and function loss of the wetland were assessed,and the effect of climate change on the wetland was analyzed in monthly weather change in 2000-2005.Meanwhile the surface water and groundwater in key sites were sampled and analyze for water quality assessment and sea water invasion to the study area was also evaluated.