Big data technology is widely used to solve human settlement problems, bringing new technology support to landscape architecture design and research. The paper sorts out relevant literature from 2011 to 2021 to summarize the development trends and characteristics. Based on qualitative and quantitative analysis, it is found that the research on big data in Chinese landscape architecture began around 2013, and the application fields cover park and green space, street space, spatio-temporal behavior and space vitality, evaluation, and so on. Big data and its application have played a positive role in promoting landscape architecture in using new data sources, forming new research methods, and expanding quantitative research approaches. Furthermore, there should be a clear understanding of the limitation that big data cannot fully cover the field of landscape architecture, and the tendency to replace theoretical conception with data analysis and replace causation with correlation should be viewed rationally.