<p>Precise analysis of the floor acceleration amplification (FAA) factor is crucial for accurately predicting the acceleration on acceleration-sensitive nonstructural components and estimating the seismic safety of nonstructural components. However, the existing literature on FAA did not analyze various influencing factors quantitatively. For solving this problem, one novel quantitative analyzing method of FAA considering various influencing factors in terms of structural type, structural height, site category, structural period, relative height and ground motion intensity based on instrumented buildings data from the Center for Engineering Strong Motion Data (CESMD) is proposed. The analysis results revealed that the site categories can significantly affect the FAA values of various types of structures, however, which has not been emphasized in previous studies. Correlation analysis reveals that the relative height is strongly correlated with the FAA, which is consistent with several seismic design codes. While, the parameters in terms of the site category, structural height and structural type also significantly correlated with the FAA. The results indicate that these three factors should be incorporated into the seismic design code. This study offers valuable insights and recommendations for the design of acceleration-sensitive nonstructural components in terms of FAA.</p>