Abstract: One of the emission technologies of smoke tower is to use the huge heat enthalpy of cooling tower to lift the smoke into the atmosphere, and the effect is better than that of the traditional chimney. In this paper, through the study of Southern China high temperature and high humidity area atmospheric environment, topography and other factors after the technology of flue gas emissions on the surrounding environment of the smoke tower, and quasi conditions using cooling tower emissions assessment (Froude) method to determine the parameters of Froude, the number of monthly plan on the construction of each load is calculated and the calculation of the load the research project of flue gas emission influence on atmospheric environment by using modulus test method.