Calculation method for groundwater resource replenishment amount of arid inland basin

The invention relates to a method for calculating the groundwater resource supply amount of an arid inland basin, and the method comprises the steps: setting a plurality of exploration points in a preselected region, and obtaining the geologic structure composition and hydrogeological conditions of the region; constructing a regional geologic structure model; partitioning the region based on the regional geologic structure model, the permeability coefficient of the spatial aquifer of the plain region and the specific yield of the aquifer; by means of an in-situ monitoring test mode, collecting the surface water runoff of a monitoring point, and obtaining the infiltration replenishment amount of underground water based on the runoff; by means of a statistical mode, a function curve of the infiltration replenishment amount and the runoff amount is established, and a prediction formula of the infiltration replenishment amount is obtained; and based on the prediction formula of the infiltration replenishment amou