CIE has proposed the semi-cylindrical illuminations as evaluation indicators and the overseas reports nave also been put forward in the use of three-dimensional sense indicators to prevent violations based on the assessment of lighting to create efficient, economic, safe and comfortable urban traffic lighting environments. But this required experimental verifications. The study used subjective and objective experiment methods to survey the parts of the sidewalk lighting in Chongqing urban. Through extensive testing information disposals and analyses, the autrors illumination should be the optimal parameters of sidewalk lighting and exist problems at present. The computer gray separation method is first used in analysing the facial features of pedestrians at night. It gets the scope of applications and application conditions of three-dimensional sense. The study provide an experimental basis and scientific method for constituting sidewalk lighting evaluation indicators, and provided important values for the study of sidewalk lighting evaluation indicators.