The lateral collapse-resistant capacity of the structure is the foundation of structure seismic performance assessment.Four seismic performance factors,namely,the yield ratio, the system overstrength factor, the ductility factor and the malleability factor, are used to evaluate lateral collapse-resistant capacity of 12 codified designed RC structures. The influences of the distribution of lateral loadings and seismic fortification intensity are considered in the Pushover analysis. Lateral collapse-resistant capacity of the structure is evaluated with capacity curve and seismic performance factors. The results show that lateral collapse-resistant capacity of the structure can be analyzed by seismic performance factors from two aspects, strength storage and deformability. The influence on lateral collapse-resistant capacity of the structure of lateral loadings increases with the rise of seismic fortification intensity and the height of structures. Seismic fortification intensity has little influence on the yield ratio and the malleability factor, but has major influence on the system overstrength factor and the ductility factor. With the increase of fortification intensity, the overstrength coefficient decreases and the ductility coefficient increases.