Abstract: Based on the block model among the digital deposit models，and within a given region，the cone solution method was used to produce a series of optimal geological pits，and establish the dynamic programming model.With the maximized net present value as target function，the dynamic programming method was adopted to make the dynamic sequencing on the optimal pit.The optimal mining path can be chosen as the optimal mining scheme.Application of this scheme into a certain open-pit mine shows that its best service life is 15 years，and the annual mining area，mining amount，stripping quantity of rock，and the cumulative net present value at the end of each year are given respectively.

Key words: Mining optimization, Cone solution method, Dynamic programming, Open-pit mine