With the fast growth of 3D printing technology，it has been widely used in the rehabilitation aid industry. This paper mainly analyzes the development of the 3D printing market and the status quo of supply and demand for rehabilitation aids for people with disability，enumerates the application cases of 3D printing technology in rehabilitation aids and discusses the challenges faced by 3D printing technology in the field of rehabilitation aids. The study found that the problem of insufficient and unbalanced development of the rehabilitation aid industry in China is prominent. It is found that 3D printing aids have many advantages such as low cost，fast production，personalized customization，beautiful appearance and strong durability by cases. However，the application of 3D printing technology in the field of rehabilitation aids industry faces challenges of small industrialization opportunities，lack of professional talents and unsound policy laws and regulations.