The utility model discloses a river pollution thing clearance structure for river course including mainstream and tributary, including mainstream clearance structure, tributary clearance structure and pollutant recovery structure, the pollutant is retrieved the structure and is set up in the mainstream in river course and handing -over department in tributary. Mainstream clearance structure is including three piece at least filters that form gyration corridor formula. Tributary clearance structure includes first tributary clearance structure and second tributary clearance structure. First tributary clearance structure and second tributary clearance structure are respectively including three piece at least filters that form gyration corridor formula. Source or mainstream getting into the lake set up the clearance structure with tributary handing -over department, carry out first time and filter in tributary or mainstream, utilize the filter to get rid of suspended solid etc. Set up the recovery chamber in handing -over department low reaches, neither hinder the flow of rivers, also can get up collections such as rubbish, the recovery chamber that only need arrive the position of fixing a point every day with rubbish collect can, practice thrift very much manpower and materials, the cost is also lower.