Abstract: In order to research the distribution and variation of heat and humidity sources at working face, field measurement of ventilation parameter in coal face is carried out by element method. The distribution contour map and nephogram of airflow temperature and humidity ratio at coal face are obtained by Surfer8.0. Field test and the results show that the temperature and humidity of airflow along inclination direction in coal face is increased gradually, and the trend of increasing heat and humidification is synchronization. The temperature parameter is highest along direction working face near goaf, followed by coal wall, near the direction of the central temperature is relatively low in coal face, the change range is also the smallest, it is basically inversely proportional to the distribution of wind and speed field in roadway. Because of dustproof water, the humidity parameters is highest near the wall, close to the goaf is lower and the minimum in the central of roadway. General analysis, the temperature and humidity of latter part increases a little larger comparing with the first half part.