By use of the critical documents and frontier knowledge, the paper used CiteSpace information visualization software to carry out visualization qualitative research for invisible scientific knowledge.Using cocitation analysis, multiple statistical analysis and social network analysis,it drawn the citation network map, the highly cited references map and the advanced progress hot word time zone map in water saving agriculture research.The results show that most of the literature of agricultural water saving at home and abroad highly cited are about the experimental method and the technology application. In recent years,China more focuses on the research of water-saving irrigation, water resources, water-saving society, agricultural water saving technology. The relevant agricultural water-saving in foreign country early focuses on intense research in irrigation water use efficiency and irrigation water resources, virtual water, agricultural production and planting structure.The domestic research on the efficient use of crop water-based genetic breeding and molecular biology is relatively weak.The biological water-saving mechanism of crop resistance to drought and high water use efficiency, water nutrient coupling and high yield coordination mechanism need to study further.The joint utilization of agricultual water saving technology needs to be strengthened; the effects evaluation of agricultural water-saving agricultural water-saving on eco-environmental is the research trends in the future. the analysis tools of mapping knowledge domains based on CiteSpace visualization, which make up for the subjectivity shortcoming of scientists traditional methods, and has important academic reference value for the exploration and discovery of the evolution law of disciplines hotspots and the latest development trend.