With the rapid development of the digital economy as a national strategy in recent years,the digital transformation of the geological industry is imminent,the value of geological data needs to be stimulated urgently,and the research on the geological big data platform is of great significance to the geological industry under the background of the digital economy.Aiming at the problems in the construction of geological big data platform,such as integration is difficult because of scattered data storage,standards are difficult to unify because of wide range of data,and processing is difficult because of strong professionalism of data.Proposes a construction plan of geological big data platform based on the idea of "Internet+" by referring to the idea of aggregating multilateral markets in the platform mode in the practice of "Internet+",with the cloud environment as the basic support,the client as the tool,the cloud information as the medium,and the cloud store as the platform,through the aggregation of multilateral markets,a win-win ecosystem is created,and the platform operation mechanism and profit model are innovated.Based on this idea,the architecture design of the platform is carried out,and the key technologies involved in the implementation process are described in detail.The platform system including microkernel client,cloud store,cloud information,and cloud support platform is constructed,which together constituted win-win ecosystem support system.The research results of this paper provide useful exploration and practice for the construction of geological big data platform and the integration research of "Internet + geology" under the background of digital economy.