As the “long-term partner” of wheelchair users, wheelchairs are already an inseparable part of the lives of wheelchair users.But if you sit in a wheelchair for a long time, will you feel back pain? This has a relationship with the backrest of the wheelchair that cannot be ignored. Compared with the cushion, the use of the backrest of the wheelchair does not seem to have a strong sense of existence. The wrong combination and use of wheelchair cushions can cause intuitive consequences such as compression injuries and pressure sores. The wheelchair backrest is relatively “unknown” and seems to be in a “dispensable” position.