River oil spill risk assessment method and system

The invention relates to the technical field of river oil spill, and discloses a river oil spill risk assessment method and system, and the method comprises the steps: determining the environmental sensitivity index of resources in a river basin to oil pollutants; determining the oil leakage amount, the oil leakage position and the oil leakage probability when oil spills from the pipeline; according to the oil leakage amount, the oil leakage position and the oil leakage probability, the diffusion trajectory of the oil pollutants in the river is calculated; and according to the diffusion trajectory and the environmental sensitivity index, calculating an oil spill pollution risk value of the river basin at each moment, and according to a preset risk level, carrying out risk comprehensive assessment on the oil spill pollution risk value of the river basin at each moment. The method comprehensively considers the possibility that the pipeline leaks into the river, the distance between the pollutant and the recepto