The indoor environmental quality in a building is one of the most important conditions that guarantee people's work and life. Indoor air pollution has become a burning issue that needed to be settled now. To grasp the emission law of indoor fine particles and drill down the control technology for chemical pollutants in the house, this paper traces a field survey on how the airborne pollutants will diffuse and what they will have an impact on air quality in the residential buildings. An experiment is also conducted on 100 new buildings randomly chosen as samples to trace and measure the concentrations of chemical pollutants in the houses, so that the relationship between the concentration of chemical pollutants and measurement schedules is built herein. Then, further analyze the change law of concentrations of fine particles. It is found by experiments that the concentrations of benzene and its series in the residential houses rise up rapidly after the room is filled with furniture, but roughly remains constant after 100 days of test. The results from experimental analysis help plot an indoor air quality decision tree to provide the clues to improving indoor air quality and reducing health threats.
