The Geoscientific Data & Discovery Publishing System (GDD) is a data publishing repository for geological scientific data mainly from solid and surface Earth sciences, which involves a wide range of disciplines, including data of geology, geophysics, geochemistry, mineral deposits, hydrogeology, engineering geology, environmental geology. It is affiliated to the National Geological Archives of China (NGAC), which is an affiliated instituion of the Ministry of Natural Resources and China Geological Surbey, and holds the largest collections of geological data in China. The data published and preserved in GDD are from not only geoscientific data in China but also those in other countries worldwide. A methodology of peer-review of datasets for data papers published with Digital Object Identifiers (DoIs) to link data repositories and journals is practised at the GDD. All datasets are fully and openly accessible through the GDD websites. The data papers in GDD are periodically published and bi-monthly issues of the data journal have and will be published regularly since 2017.