Pollution from interior decoration of buildings has brought adverse effects on people’s health. In this paper, pre-assessment of pollution during decoration design process was adopted as the advance pollution control method in the building decoration construction. The classification of indoor air quality control targets and the classification of pollution emission rate of decoration materials were introduced. The two pollutant control design methods, namely prescriptive index method and performance index method were introduced, and differences between the two methods were compared. The implementation process of how to carry out the pollutant control design was stated by a case study in an office building.