Abstract: Work for the construction of eco-agricultural modei such as transformation of Saline and easily waterlogging low land in Baodi County, highly effective utilization and protection of resources，bringing the dominance of land and biotic resources into full play,increasing Output of the system，etc． are discussed．Through improving eco-nvironment in swale，the waste saline land has been built into a commodity basis of fish,animal，fruit and grain．The rural economy has been developed in Baodi County．