The Mengyin diamond deposit in the Shandong Province is a wellknown kimberlite type diamond deposit in China of which the Xiyu kimberlite pipe is a typical representative. In recent years, the threedimensional modeling technology has been applied in the field of geoscience research. In this paper, the Xiyu kimberlite pipe is selected as the research object. A threedimensional kimberlite pipe model and the threedimensional fault structural model were constructed based on the threedimensional modeling technology. Subsequent to the analysis of geological background of rock pipe mineralization and a quantitative analysis of threedimensional spatial characteristics of fault structure, a discussion of threedimensional model superposition is undertaken to examine the relationship between the Xiyu kimberlite pipe and the structural fault characteristics. The kimberlite pipe shows a continuous “radial” spatial morphology with an expanding upper part and a narrowing lower part. The rock pipes often have dense faulted structures. The upwelling channel of kimberley rock magma may be F1, F2, F10 and other deep faults. The rock pipes are distributed on the side of the fault intersection. The morphology of kimberlite pipe and structural intersection is very similar.