Jiangnan gardens have both natural vitality and artificial artistic charm, and are a member of the world cultural heritage. This paper takes the relevant literatures of Jiangnan gardens from 1991 to 2020 as the research objects, carries out research for the cultural thoughts, gardening techniques, and artistic value of Jiangnan gardens with bibliometric method, orders the development process of Jiangnan gardens, obtains the current situation and hotspots in the research field of Jiangnan gardens, in order to provide methods and theoretical references for the further research of Jiangnan gardens.