To study the isolation performance of Scarp Tire Rubber Pads（STP）under aging-load coupling，72 STPs with dimensions of 180 mm×180 mm×69 mm are subjected to aging time of 0，77，154，231 and 308 h and 5 MPa load coupling，then a low cycle repeated loading test is carried out to analyze failure characteristics，bearing capacity attenuation，hysteretic energy loss characteristics of STP. Based on the experimental results，the three-fold line skeleton curve with negative stiffness segment is obtained and according to the characteristic parameters of the STP restoring force model，the formula for calculating the characteristic points of STP skeleton curve considering aging-load coupling is obtained. Using regression analysis，the cyclic degradation index is obtained based on hysteretic energy consumption. Through the cyclic degradation index，the STP restoring force model under aging load coupling considering the pinch effect，strength degradation and stiffness degradation effects is established. The study shows that the aging-load coupling effect does not damage the hysteretic energy of STP in the actual aging time of 50 a，while the hysteretic energy of STP even increases due to aging and hardening of STP surface rubber. The STP resilience model established by introducing the cyclic degradation index is in good agreement with the test hysteresis curve，which verifies the applicability of the resilience model.