Abstract: Based on the site measured study results of the seismic CT technology applied to several coal mining faces in the recent years, the paper stated the app lication principle, method and explanation of the seismic technology applied to coal mining face for different purpose detections.The study showed that based on the ab normal rate distribution of the seismic velocity, an evaluation on the mine pressure bumping danger of the coal mining face was conducted and the mine pressure bumpi ng danger area was determined.According to the abnormal distribution law of the seismic wave velocity band and in combination with the related geological information, a detail exploration of the faults in the coal mining face could be conducted.With the application of the wave velocity zone features in front of coal mining face, the distri bution of the pilot support pressure in front of the coal mining face could be divided.