Abstract: Because of global warming, frequent rainstorm disasters have caused a lot of economic losses, resulting in domestic and abroad scholar's extensive research. Based on the research results of rainstorm-flood disasters in CNKI database and core collection of Web of Science, this paper analyzed the characteristics and trend of rainstorm and flood disaster by using CiteSpace visual analysis tool. The research results showed that:① The number of research achievements on rainstorm-flood disasters in Chinese and English both showed an increasing trend over time, and the number of Chinese research achievements was significantly more than that of foreign languages.② The institutions with high research achievements in Chinese were the National Climate Center, Wuhan Regional Climate Center, National Meteorological Center, East China Normal University, and so on. The institutions with high research achievements in English were the Chinese Academy of Sciences, University of Basel, University of Copenhagen, etc. In addition, the major institutions did not cooperate with each other closely and the number of research results varied significantly between different institutions.③ Chinese researches focused on “rainstorm ”, “urban waterlogging” and “meteorological disaster”, and tended to study the mechanism and the influence of rainstorm-flood disaster. English researches focus on “climate change”, “management” and “risk”, and tended to study the prevention and response of rainstorm and flood disasters.④ The research results showed a trend of paying more attention to prevent the risk of rainstorm and flood. The research results can provide reference for future research on rainstorm-flood disaster.