Abstract: Based on three-dimensional visualization technology and the support of human-computer interaction, function computation and three-dimensional visualization in petrel geological modeling technology, research on three-dimensional visualization geological modeling and three-dimensional visualization has been conducted to No.9 and No.10 oil layer in Yan'an group of Jurassic system, Liugou oilfield, Wuqi oil production factory, Yanchang oilfield. Aboveground and underground reservoirs are displayed in integrated three-dimensional visualization. Deep, intuitive and real reappeared understanding on geology has been acquired. Furthermore, the geological conditions beneath this oilfield have been more clearly understood, which lead to the establishment of precise three-dimensional model of geological reservoir and oil well spatial display. This paper provides reliable reference and technical support for oilfield exploration, deep oil reservoir study and oil reservoir management in the future.