Parallel tetrahedron subdivision method of complex geologic model

The invention provides a parallel tetrahedron subdivision method of a complex geologic model. The method comprises the following steps of applying complex geologic-body three-dimensional visual modeling software to output all the block files of a geologic body; grouping blocks; starting a plurality of processes and distributing one process for each block group; in each process, applying a surface modeling method to carry out surface grid subdivision on each block in the group successively and successively merging a surface grid of each block in the group so as to form a surface grid of a composite block; in each process, carrying out limited tetrahedron grid subdivision on the composite block; and after all the processes are calculated, and merging tetrahedron grids of the processes so as to form a tetrahedron subdivision grid of a whole geologic body. An applied range of the parallel tetrahedron subdivision method of the complex geologic model is wide. The method can be used to process the complicated geolog