In this study, the authors used cylindrical shell diameter and the thickness of the design type of earthquake boiler chimney enterprises producing boiler emissions as a research object, the process firstly boiler type and fuel options construct a different model , with input air temperature chimney exhaust gas temperature and exhaust gas flow rate calculations to investigate the different types of chimney at the theoretical formula can reach values of minimum thickness and Suitable design.. In order to further investigate the chimney under different fuels and different types of boiler combustion conditions and in line with the current general domestic and international laws and regulations , in this paper, the authors analyze applicable regulations , more in line with the construction of a model entity chimney , and then the results from the existing cases appear chimney more in line with the actual situation of the minimum thickness , the thickness of the chimney determined the most appropriate data .