A patient support structure comprises a first supporting part, a second supporting part and a third supporting part. The first supporting part comprises a first resilient member； the second supporting part comprises a second resilient member； and the third supporting part is between the first supporting part and the second supporting part. The first supporting part, the second supporting part and the third supporting part together define a supporting surface extending along a longitudinal axis, and the second resilient member comprises a first supporting area and a second supporting area different in supporting strength.
