The invention relates to a wearable sitting posture assisting device, comprising at least one body connection unit (10a, 12a； 10b), the body connection unit (10a, 12a； 10b) featuring at least one support element (14a； 14b) and at least one body part connector (16a； 16b) for connecting to at least one body part which differs from a foot of a person (200a)It is proposed that the body part connector (16a； 16b) is connectable to and/or disconnectable from the support element (14a； 14b) in at least one body part connector wearing state.
