Abstract
Under the organization of China Geological Survey, relevant departments have made industry specifications and technical requirements based on hydrogeological survey data collection at the scale of 1:50000. Among them, groundwater resource map is a must. According to nationally unified technical requirements of mapping groundwater resources put forward in 2018, this paper mainly interprets relevant principles, content, methods, diagrams as well as legend, and further to point out future directions: Higher precision will equal to higher demand of application, so that is there any more effective way to further interpret application aspect rather than only rules?