Abstract: Twenty-nine finite element models of a ten-story frame structure were set up to investigate the influences on its natural vibrating period of the filled wall. The main influential factors included the walls material,its spatial arrangement,and its quantity in weak story. Results indicate that the performance of filled walls materials has little influence on the frames natural vibrating period. The quantity of filled walls in weak floor and the location of weak floor are the two main influence factors. Based on numerical analysis,the modified models for calculating the frames natural vibrating period are presented,where the influences of filled wall are given.