Abstract: The skeleton structure of soil has a non-negligible influence on its deformation and strength characteristics. A novel artificial structured soil is prepared using metakaolin-based geopolymer, and its structural characteristics are analyzed and evaluated. Furthermore, the mechanical properties of the artificial geopolymer structured soil are investigated through triaxial shear tests. The results indicate that the structural yield stress and void index of the artificial geopolymer structured soil increased significantly compared to remolded soil, with the growth magnitude being markedly higher than that of traditional cement structured soil, demonstrating more pronounced structural characteristics in the geopolymer structured soil. Additionally, with increasing metakaolin-based geopolymer content, the stress-strain relationship of the artificial geopolymer structured soil gradually exhibits "strong softening" behavior, and the failure mode transitions to shear failure, indicating the formation of a distinct internal skeleton structure.