The purpose of this paper is to elaborate on the research direction and research hotspot of the low-carbon garden at home and abroad. The development process of research and knowledge framework of the low-carbon garden were explored to provide suggestions and references for further research and application design methods in the field of low-carbon garden. The literature in the field of the low-carbon gardens from 2011 to 2021of CNKI database and Web of Science core collection database was retrieved. The search term of Chinese literature is “low-carbon garden” OR “low-carbon landscape”, and the source category is academic journals; The search term of foreign literature is “carbon AND (landscape OR green space OR parks OR garden OR plant)”, and the literature category is “article AND review”. Cite Space 5.7.R2 software was used to draw the correlation map of the number of articles and keywords. Finally, the results are as follows: (1) The study finally included 1 091 relevant literature in the field of low-carbon gardens, including 626 in the CNKI database and 465 in the Web of Science core collection database. (2) The keyword co-occurrence knowledge map and keyword frequency ranking table show that the frequency of low-carbon concept in Chinese literature is the highest, 228 times in total, followed by the low-carbon landscape, landscape design, urban landscape, low-carbon garden, et al, generating 11 clusters of low-carbon concept, low-carbon city, low-carbon, landscape, low-carbon garden et al; The keywords with higher frequency in foreign literature are carbon sequestration, carbon storage, ecosystem services, forests, climate change, land use, vegetation et al. seven cluster groups are derived, including vegetation restoration, park carbon capture, ecosystem services ,and soil organic carbon. (3) After analyzing the literature data and atlas in detail and studying the literature content, it is found that the domestic research content focuses on the design concept and design application method of garden green space: the design concept focuses on “increasing carbon sink” and “reducing carbon source”, and the design method pays more attention to the expression of the low-carbon concept of garden elements such as plants, terrain and structures, Adopt materials with strong carbon fixation ability or carbon friendly; Foreign literature mostly focuses on scientific research and empirical research: calculate the carbon storage and carbon fixation capacity of landscape elements such as plants, soil and water, so as to provide data reference for low-carbon garden construction; Formulate a systematic low-carbon landscape design framework from concept t湯??畭獰敬?敭癥慮汴畡慴瑩楯潮渮??慳渠摦?汲漠睴?捥愠牲扥潳湥?敲晣晨攠捯瑢?敥癣慴氬甠慴瑨楥漠湤??呥桳楴獩?挠慬湩?扥敲?畴獵敲摥?慦獯?瑵桳敥?戠慯獮椠獴?晥漠牭?浣慲楯渭瑬敥湶慥湬挠敲?慳湥摡?楣浨瀬爠潴癡敫浩敮湧琠?楡湲?瑳栠敡?汤愠瑧敲牥?獮琠慳杰敡?潥晳?摡敳猠楴杨湥?main research object, while the foreign literature pays more attention to the macro-level research, and selects large-scale forests, rivers, and wetlands as the research object. (4) Based on the systematic discussion and research hotspot analysis of the review, and combined with the advantages and disadvantages of relevant research on low-carbon gardens at different levels and design stages at home and abroad, three suggestions for the design and construction of low-carbon gardens are put forward: the aesthetics and functionality of landscape elements are combined with the concept of low-carbon, and plants are the most important element to increase garden carbon sink, ornamental plants with high aesthetic value and strong carbon sequestration ability shall be selected for plants. Natural forms shall be used for landscaping, and composite layered structures shall be used for plant structures. In addition, low-carbon materials and waste materials can be used to build landscape structures or sketch facilities; The landscape architecture layout under the low-carbon concept should be based on the natural layout, comply with the original terrain and natural conditions, and reduce the carbon emission generated in the transformation process. In the planning of functional space, in addition to the scenic space, it is also necessary to pay attention to the activity space most related to the needs of users, and make a reasonable layout in the park according to the openness and functional characteristics of the space; Build a landscape evaluation system under the low-carbon concept: the landscape evaluation system of the low-carbon landscape can form a new system more in line with the core requirements of low-carbon landscape according to its design theme and focus, combined with the evaluation research methods and use evaluation research methods of aesthetics, comprehensive beauty evaluatio