Abstract: A slide rail buffering structure includes a connection board, a slidable board, a damper, a pull-resistant assembly, and a positioning bar. The positioning bar is received in a slide channel of the connection board. The slidable board is fit over the positioning bar and is set on the track portion of the connection board. The damper is received in an end of the connection board and the damper is coupled to the slidable board. The pull-resistant assembly is connected between the slidable board and the connection board and is set at an end of a rail base plate. The structure of the present invention allows the positioning bar to be caught and driven by a guide section of a rail plate to alleviate and buffer the pulling force of the connection board that is moved backward for returning so as to prevent damage caused by excessive pulling force.