The work aims to propose a bionic design path of product form under the sustainable concept, in order to further enhance the sustainable application value of products and take rattan furniture as the research object to explore the sustainable design innovation of rattan furniture. Firstly, literature research and field investigation were used to sort out the design and research status of rattan furniture in China and abroad, and the existing problems in rattan furniture industry were summarized. Secondly, the questionnaire survey method was used to determine the user needs and bionic objects, and the decision analysis principle of AHP (Analytic Hierarchy Process) was used to select the best bionic design elements, and the sustainable design strategy was applied to the design innovation of rattan furniture. Finally, LCA (Life Cycle Assessment) was used to evaluate the sustainability of the design scheme, and the scheme with a higher comprehensive level was determined. The bionic design path of product form under the sustainable concept is constructed by the above methods and the sustainable design strategies applied in the product field are proposed, and applied to rattan furniture design practice. The feasibility and effectiveness of the path are verified from three aspects of element extraction, scheme design and scheme evaluation combined with user surveys and expert scores, and new ideas are provided for sustainable innovation of rattan furniture.