The coil spring friction pendulum combined shock isolator. Obtained earthquake records show that every earthquake record has special dominant frequency, namely, has abundant energy on some frequency. Common non-isolated multistorey buildings has large rigidity and short period, and fundamental period thereof is just on the maximal frequency band of earthquake input energy, thus corresponding acceleration response is much larger than ground motion. If the frequency of structure movement is lead to miss the abundant energy-containing dominant frequency, the earthquake response of the structure can be reduced. The device comprises a metal cylindrical coil spring 4, wherein, the upper part of the metal cylindrical coil spring 4 extends into a polyfluortetraethylene hollow round bar 5, the upper part of the polyfluortetraethylene hollow round bar 5 is a convex spherical surface 6 which is contacted with an upper support plate 9 by a polyfluortetraethylene sheet 7, the contact surface between the polyfluortetraethylene sheet 7 and the upper support plate 9 is smooth spherical surface, the edge of the smooth spherical surface is welded with a ring-shaped displacement restrictor 8, the upper support plate 9 is connected with an upper support table beam 10 by an upper embedded reinforcement 11, the metal cylindrical coil spring 4 is fixed on a lower support table plate 3, and the lowersupport table plate 3 is connected with a lower support table beam 2 by a lower embedded reinforcement 1. The invention can be used for resisting future contingent intense earthquake.