Permanent wall-embedded high-rise building fire escape system shared by all floors and using method

The invention discloses a permanent wall-embedded type high-rise building fire escape system shared by all floors and a using method thereof.The system comprises an escape sliding rail with the back face provided with an installation hole and used for playing a guiding role, and the escape sliding rail is vertically, permanently and fixedly installed at the position, close to an escape window, of the outer side wall of a high-rise building through the installation hole; the escape sliding rail comprises an anti-skid walking rack fixedly installed on the inner wall of the sliding rail. The escape sliding frame is installed in the escape sliding rail and comprises a bearing beam, an upper supporting wheel shaft, an upper supporting wheel, a supporting beam, a lower supporting wheel and a damping descent control device, wherein the damping descent control device is fixedly connected with the bearing beam and rotationally connected with the upper supporting wheel shaft. A stable double-triangle supporting structu