Abstract: According to the characteristics of investigation business, this paper comprehensively analyzes the advantages and disadvantages of the existing investigation system.By making full use of Internet technology, 3S technology, mobile communication technology and geographic information system technology, the comprehensive monitoring and investigation system for forest, grassland and wetland resources is designed and established in Guangdong Province.The system realizes the multi-end collaborative work mode of work synchronization, data synchronization and business synchronization, meets the needs of various forest-grassland-wetland investigation tasks, and greatly improves the efficiency and result quality of field investigation.