Abstract: After the form of ventilation system,it used mine transient electromagnetic method and mine voivce frequency elctric perspective of more mature the electrical detection technology in work surface inside area to avoid water inrush threat during working face mining process.it may be effective monitoring on the working surface water abundance,establishing with a fine water-contained forecating technique before the coal face mining,The results show that:Mine transient electromagnetic method can be multi-angle and multi-level detection,better delineating different deep water physical distribution range to the direction of working face roof and base;Mine voice frequency electric perspective can be the single directional detection, better delineating face internal coal layers of a framed with water;Combined of mine transient electromagnetic method and mine voice frequency elective perspective comprehensive detection on working face internal region,it can be realized all-around fine detection complemented.