Abstract: At present, in view of the seismic performance evaluation of building composite energy-saving wall, according to the degree of wall damage after strong earthquake, the accuracy of the evaluation results is low. Therefore, the seismic performance evaluation model of building composite energy-saving wall under strong earthquake environment is constructed. Firstly, according to the strength and stiffness degradation coefficient of composite energy-saving wall components, the damage situation of building composite energy-saving wall under strong earthquake environment is described. On the basis of this, IDA curves are constructed according to structural response parameters and seismic intensity parameters of building composite energy-saving wall under different intensity earthquake input conditions. IDA curves are regularized by R-O single function curve to obtain probability dividing curve of IDA, and slope of 50% probability dividing curve is used to describe wall structural damage. The slope of the curve is the damage index of the wall structure. According to the index, the seismic performance of building composite energy-saving wall under strong earthquake environment can be accurately evaluated. The experimental results show that the model can accurately analyze the displacement change of building composite energy-saving wall structure with different peak ground acceleration, and the accuracy of evaluation results of building composite energy-saving wall is gradually improved with the increase of earthquake magnitude. It is a seismic evaluation model of building composite energy-saving wall suitable for strong earthquake environment.