In order to promote the digitalization and intelligence construction of mines, It is crucial to provide theoretical and three-dimensional basic research data for the efficient mining and utilization of mining resources. This article takes Yunshan graphite mine in Heilongjiang province as the research object, integrates the drilling database with DIMINE digital mining software, analyzes the geological characteristics of the deposit, discusses its geological significance, analyzes the distribution characteristics of lithology and ore bodies, classifies and merges the lithology of the mining area, and combines various lithology into six categories: schist, Quaternary, carbonate, granulite, dike and structural correlation, and establishes a three-dimensional model of complex geological bodies. Research demonstrates that the model intuitively shows the spatial distribution law of rock strata, provides data support for the genetic analysis of ore deposits, collaborative exploitation of resources and optimization of blasting technology, and has guiding significance for improving the comprehensive utilization value of graphite resources.