The invention discloses an in-situ leaching ore deposit stratum modeling method. In the in-situ leaching ore deposit stratum modeling method, a stratum and an ore body boundary do not need to be artificially delineated in advance; based on drilling original data and mineral-bearing and water-containing characteristics of the drilling original data, ore deposit stratum reconstruction and automaticupdating are rapidly and accurately achieved, and spatial subdivision is conducted on an in-situ leaching ore deposit by means of the established stratum sequence spatial geometric model, the stratumthree-dimensional attribute model and the in-situ leaching mining engineering model to generate a three-dimensional rasterized full-information model. In a complex geometric space subdivision process,stratum space geometrical characteristics are accurately reflected, and the principle of physical, chemical and mechanical property change conditions is finely reflected; the sizes of the basic unitbodies are determined in a self-adaptive mode, corresponding stratum information is given to all the basic unit bodies, in-situ leaching ore deposit stratum digital modeling is achieved, on this basis, leaching performance evaluation is accurately conducted, ground leaching area production drilling arrangement and well structure design are optimized, and great practical significance is achieved.