Abstract: The ventilation cooling experiment was conducted in Xiadian Gold mine's No.38 excavation roadway at underground -682 m.Fluent software was used to simulate the numerical statistics of tunneling velocity and temperature distribution under the experimental conditions to validate the reliability of the method.The influence of various factors on the ventilation cooling process is studied.A changing rule of airflow temperature with air volume，air inlet temperature and wall temperature in the excavation roadway is derived and the influence factors are listed as air inlet temperature，wall temperature and air volume in descending order.The airflow temperature in excavation roadway increases linearly as the air inlet temperature or the wall temperature increases.It is an available measure to bring down airflow temperature by increasing air volume，but the cooling effect weakens as air volume increases.

Key words: Ventilation cooling, Numerical simulation, Excavation roadway, Temperature field