Abstract: The uniform wet surface model and the part of wet surface model were considered in this paper, and numerical simulation of the distribution of surrounding rock temperature in the two wet tunnel models was carried out. Furthermore, the paper discussed calculation accuracy of various circumstances and application in the ventilation network calculation, according to the simplified calculation model, and compared with the test result in the actual part of the mine roadway. The results showed that the part of wet tunnel wall temperature was significantly lower than the drying section of roadway wall temperature; the temperature distribution of surrounding rock between uniform wet surface and part of wet surface was significantly different; the initial temperature and humidity of roadway can be used as the initial value to calculate the distribution of temperature and humidity respectively in the actual prediction.