This paper verifies and investigates the main sources of pollution in the watershed through the combination of data collection and field research, and comprehensively organises the basic data of each source of pollution in the construction of housing ecological environment. In order to more accurately calculate the nitrogen and phosphorus pollution load emitted by each watershed pollution source, this topic uses the field monitoring of pollution sources to measure the pollutant emission coefficients, while the watershed pollution in the housing ecological environment construction mainly contains agricultural cultivation, agro-industrial and domestic sewage, atmospheric wet deposition, and decentralised aquaculture. Based on the concept of ecological restoration, an intelligent ecological restoration mechanism was designed to decipher the components of each part of the mechanism. The above theoretical knowledge and research data are synthesised to discuss the watershed pollution control and intelligent ecological restoration technology. The contribution of each pollution source to COD pollution is in the order of agricultural cultivation (245.47t/a) > rural domestic sewage (212.35t/a) > farmhouse wastewater (98.42t/a) > decentralised aquaculture (66.72t/a) > atmospheric wet deposition pollution (45.53t/a), with the best oxygen permeability in Sink 3, which has a depth of permeable substrate up to 7.25mm, and the depth of permeable substrate in Sink The depth of permeable substrate of Sink 1 is only 2.45mm, and lowering the water level can effectively increase the nitrification rate of the surface layer of substrate and achieve the simultaneous removal of pollutants, which is conducive to the green and sustainable development of the ecological environment.
