The Huayingshan Grand Canyon Geo-park is a kind of scenic landform geo-park with canyon landform, geological structure and karst landform. With the geological heritages in this geo-park as the foundation and the fold belt of Eastern Sichuan basin and paralleled ridge-valley of Eastern Sichuan basin and Wanxian stratigraphic plot as the research visual angle, the authors constructed a complete geological heritage resources system of Sichuan Huayingshan grand canyon geo-park system consisting of 5 categories: geological profiles, biogliph, landform landscape, water landscape and environmental geological heritages, with totally more than 100 geological heritage scenic spots. Based on an analysis of the geological heritage system and the achievements in scientific research, this paper discussed the geographic significance of the geological heritages in Huayingshan Grand Canyon Geo-park. The research indicates that the geological heritages in Huayingshan Grand Canyon Geo-park has important geographic significance for many research fields such as geological structure, strata, karstology, hydrogeology and geomorphology.