The invention provides a door panel supporting and power buffering device. The device comprises a support frame (2), wherein a body of the support frame (2) is connected with a door panel through a spherical support structural member (5), both ends of the support frame (2) are respectively connected with an external structure of the door panel through an upper bearing hinge body (3) and a lower bearing hinge body (4); the spherical support structural member (5) comprises a connecting shaft (51) and a spherical bearing (52), and the spherical bearing (52) is arranged in a groove (11) in the door panel; the connecting shaft (51) penetrates through the body of the support frame (2) to be connected with the spherical bearing(52). According to the supporting and power buffering device disclosed by the invention, for each operation of opening a door, and in a certain state, the load of the door panel can be supported and the door panel can be driven to move, at the same time, the door is opened and closed, the device has the function of buffering, so that resilient displacement is reduced, and the safety and the stability of the door panel during operating can be ensured.