Recent dramatic advances in technologies such as computer, data management, and communication have revolutionized the way geologists collect, disseminate, and utilize geoscience data. After summarized the characteristics and fusion of geo data, several major field data capture systems adopted in North America have been introduced. Geoscience information dissemination and distribution via the web technology and GIS package have also been discussed. In addition, multi sources geo data integration and their applications to mineral exploration, geological hazard risk assessment, and national land resources protection and utilization have been addressed by concrete examples. Recent dramatic advances in technologies such as computer, data management, and communication have revolutionized the way geologists collect, disseminate, and utilize geoscience data. introduced. Geoscience information dissemination and distribution via the web technology and GIS packages have also been addressed. In addition, multi sources geo data integration and their applications to mineral exploration, geological hazard risk assessment, and national land resources protection and utilization have been addressed by concrete examples.