Abstract: The deep heat harm of Liangbei Coal Mine is more serious, aiming at the local high temperature circumstance at working face, through the heat source investigation of working face, the paper sets up the mathematical model of heat transfer according to conservation of energy,for the heat source at 11061 working face it carries out theoretical analysis and airflow temperature forecasting. Compared with the practical result, the heat source analysis show that surrounding rock and mechanical equipment heat dissipating capacity at the working face is in larger proportion, accounts for 28.3% and 47.0%, is the main reason for the temperature rise.Contrast results show that the temperature prediction results and practical measurement result are consistent, which verify the heat source analysis and method of airflow temperature forecasting is correct.