A sitting motion support system for supporting a sitting motion from a standing posture of a care receiver to a sitting posture, comprising: a first area that can be worn by a care receiver and can be a neck portion or a shoulder portion of the care receiver A hold mechanism (3g) including a first holding part (3a) and a second holding part (3b) capable of holding a second region which is a waist part, a holding mechanism (3g) capable of being positioned on the chest and connected to a hold mechanism A knee bending notification part (60) for informing the care receiver that the knee is bent so as to notify the care receiver, a nursing care belt (3) having a connecting part (3c), a knee bending notification part In order to support the sitting motion from the posture to the sitting posture, after notifying by the knee bending notification part, the nursing belt is pulled toward the slightly forward lower side of the care receiver and then towed slightly toward the rear downward And a traction mechanism that operates.被介護者の立位姿勢から座位姿勢への着座動作を支援する着座動作支援システムであって、被介護者に装着可能であり、被介護者の首部又は肩部である第1領域を保持可能な第1保持部(3a)と、腰部である第2領域を保持可能な第2保持部(3b)とを備えるホールド機構(3g)と、胸部に位置可能であり、ホールド機構に連結された連結部(3c)とを備える介護ベルト(3)と、膝を曲げる動作を行うように被介護者に通知する膝曲通知部(60)と、連結部を介してホールド機構に連結され、立位姿勢から座位姿勢への着座動作を支援するように、膝曲通知部での通知後に、介護ベルトを、被介護者の下方やや前方に向けて牽引動作したのち、下方やや後方に向けて牽引動作する牽引機構とを備える。
