Abstract: In order to study the influence law of non-uniform overburden load on the goaf subsidence of open-pit mine, based on mining subsidence theory and technology, a subsidence model of goaf was established. Through modeling by Rhino-FLAC^3D, we analyzed the stress distribution pattern and deformation rule of the surface subsidence of the mined-out area caused by the non-uniform load in the process of dump loading and different outer dump shapes, summarized and analyzed the influence law of the subsidence of the overlying goaf under the dump of open-pit mine. The results show that with the increase of the continuous load height of the dump, the non-uniform load on the goaf increases, the displacement of surface subsidence increases, and the vertical compressive stress decreases to zero with the increase of the buried depth and then becomes the tension-shear stress; when the horizontal distance of the goaf is more than 300 m from the dump, the overburden of the dump has little influence on the deformation of the goaf; the top of the goaf is not loaded to discharge the abandoned materials, and the surface settlement is about two times of the accumulated settlement of the roof of the goaf; the surface subsidence displacement of the square dump is larger than that of the circular dump. The subsidence displacement curve of the length of the goaf under the two kinds of dump structures is V-shaped symmetrical, and the stress displacement curve is M-shaped. The circular dump has less influence on the deformation of the goaf in the underlying rock strata, which is more conducive to the stability of the open-pit dump.