River sediment sampling and point distributing method

A river sediment sampling and point distributing method comprises the following steps: acquiring basic data; identifying pollution emission sources; calculating a pollutant mixing distance; arranging sampling points; judging whether historical governance exists at the position of the layout point or not, and if yes, performing identification; curve section sampling point adjustment; and adding a sampling point at the position, far away from the first sewage draining exit, of the upstream of the riverway, taking the sampling point as a contrast point of the riverway, and obtaining a final sampling point layout scheme. According to the invention, the spatial distribution and deposition migration characteristics of the pollution source are considered, the sediment sampling point distribution method not only considers the spatial distribution characteristics of the pollution source discharged into the river, but also considers the migration motion characteristics of the pollutants in the water body, and the obtai