The traffic noise is one of the main problem of the city,with the quickly urbanizing and social economy development.This thesis is based on the detected data which is got from our personal research study between the year 2002 to 2004 in Lanzhou City,analysis several index in the background of city space structure,and have drawn that:(1) The public's reflection to different functions road,different administrative road,different directions road are that,the noise rises and falls greatly,noisy and seldom accep...