Abstract: Geological heritage investigation and value analysis are the preliminary work for geoscience tourism. The geological heritagess of the Dadu River Gorge National Geopark are widely distributed. Reasonable classification and development protection can reduce the impact of geological disasters and human activities on geological heritages. 15 index were selected from the aspects of geological， ecological and social environment. By using AHP， coefficient of variation and minimum relative information entropy， we established the evaluation system of geological environmental bearing capacity of the Dadu River Gorge National Geopark and studied the environmental bearing capacity of the Dadu River Gorge National Geopark. It was found that the Dadu River Gorge has a good geological environmental bearing capacity， showing a spatial pattern of “ superior in the north and inferior in the south” . On this basis， we did local spatial autocorrelation analysis of environmental bearing capacity， and established a zoning method based on dual evaluation of geological heritages classification and bearing capacity. A hierarchical zoning is proposed for the development and protection of geological heritages of the geopark，dividing the geopark into compound development zone， ordinary development zone， key protection zone and strict protection zone.

Key words: geological environment, bearing capacity, the Dadu River Gorge, geopark, geological heritages