Abstract: This paper provides an exploratory study about data quality evaluation index system of geological hazard. To serve geological hazard research and national geological hazard prevention, select five dimensions of completeness, timeliness, accuracy, consistency, and standardization as first-level indicators, which contains 10 secondary indicators and 28 tertiary indicators. Take the geological hazard database of a province in central China as an example, conduct data quality evaluation with Delphi method, the results show that is good the overall situation of the province's geological hazard database quality. This quality evaluation of geological hazard data is an exploratory research that integrates science and practicability, it is of great significance for improving the data quality to support geological hazard research and national geological hazard prevention.