Method for constructing three-dimensional model of gobi desert coverage area

The invention relates to a three-dimensional model construction method for a gobi desert coverage area, and the method comprises the steps: determining a physical lithology recognition standard according to a lithology specimen of a to-be-detected area, and enabling the to-be-detected area to comprise the gobi desert coverage area; carrying out geology-geophysics pre-filling based on the detectiondata to obtain a pre-filled graph, and establishing a graph filling skeleton; implementing backbone profile mapping based on the mapping skeleton; and correcting the backbone profile map to obtain acorrected backbone profile map; and performing three-dimensional inversion based on the mapping skeleton and the corrected backbone profile mapping to obtain a three-dimensional structure model of thecoverage area. According to the invention, effective combination of geophysical methods is integrated; the advantages of the methods are exerted by combining drilling and surface geological survey, the defects of a single meth