The rehabilitation assistive device industry is an important field of innovative development in the health industry and occupies a huge consumer market share worldwide. The rehabilitation assistive device industry in China has developed rapidly in recent years, but there is still a gap between China and developed countries. How to improve the industrial competitiveness and promote the sustainable development of this industry is therefore the subject of this study. This study uses the "diamond

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... del" to analyze the development status and competitiveness of China's rehabilitation assistive device industry from six aspects: "production factors", "demand conditions", "related and supporting industries", "market strategy and peer competition", "opportunities" and "government". It concludes that the industry chain is not perfect, the ability of independent innovation is weak, the vitality of market factors is not mobilized, and that there is a lack of systematic industrial policy support. Additionally, it puts forward the development countermeasures of integrating industrial resources, improving the industrial production chain, stimulating market demand, cultivating industrial talents, improving technological innovation, seizing opportunities, and improving industrial policies, laws and regulations. In this study, through the linkage analysis between the elements, it is believed that the elements affect each other. Therefore, in order to achieve sustainable development of the rehabilitation assistive device industry, all of the elements must be strengthened.