Fuente: Wipo "digitalization" The invention provides a pollution influence range defining method and device, a storage medium and electronic equipment. The method comprises the steps that the particle mass of each pollutant particle in M pollutant particles is determined; determining the diffusion simulation result of each pollutant particle in the P pollutant particles based on the particle mass of each pollutant particle, the target flow field data and the target meteorological field data, and recording the position information of each pollutant particle under the current drift diffusion simulation time step; on the basis of the diffusion simulation result of each pollutant particle, the grid area mass concentration of each concentration judgment grid area in the target area is updated; and when the grid area mass concentration of each concentration judgment grid area does not reach a diffusion simulation stop condition, continuing drifting diffusion simulation to obtain at least one piece of position information of each initial pollutant particle in the initial pollutant particle set so as to determine a pollution influence range. The embodiment of the invention can improve the accuracy of the pollution influence range.