The invention provides a friction pendulum sliding building shock isolation system. The friction pendulum sliding building shock isolation system comprises a base, wherein a lifting groove is formed in the top of the base; a limiting pipe is fixedly installed on the inner wall of the bottom of the lifting groove, and a connecting column is slidably connected in the limiting pipe; the top end of the connecting column extends to the upper part of the base, and a supporting plate is fixedly installed at the top end of the connecting column; threaded pipes are rotatably connected to both sides ofthe limiting pipe, the ends, far away from each other, of the two threaded pipes are correspondingly and rotatably connected with the inner walls of both sides of the lifting groove; the threaded pipes are fixedly sleeved with rotating gears; and racks are fixedly connected to both sides of the bottom of the supporting plate. According to the friction pendulum sliding building shock isolation system, the operation is simple; the supporting plate is pressed, so that the threaded column can be driven to move, and then a screw rod can be driven to move; and at this time, the supporting plate is supported under the action of buffer springs, so that shock isolation and buffering can be effectively carried out when a floor of a movable plank house is under pressure.