The invention discloses an intervertebral filling fusion device which is used for being placed between any two adjacent centrum end plates of a human body lumbar vertebra. The intervertebral filling fusion device is characterized in that a wrapping body filled with padding inside and an annular air bag are included, the annular air bag is placed on the outer periphery of the wrapping body in a sleeved mode and is used for abutting an upper centrum end plate and a lower centrum end plate in a supporting mode and supporting the padding, the top portion and the bottom portion of the padding are attached with the surface of the upper centrum end plate and the surface of the lower centrum end plate respectively, and the padding comes from autogenous bones or allogeneic bones or artificial bones. The top face and the bottom face of the device can be attached with the surface of the upper centrum end plate and the surface of the lower centrum end plate respectively, point contact is changed into face contact, a stable mechanical structure can be formed to support a vertebral column, the device can be completely attached with the upper centrum end plate and the lower centrum end plate, and favorable conditions are created for fusion of a supporting body and vertebral sclerotin.