Three mountain island gold three surface into the sea, is the first submarine mine mining, ore body is hosted in sea level, is the fracture aquifer water is given priority to deposit, hydrogeological conditions, and secondary complicated by overlying surface water (salt) water threat, a direct impact on the prevention and control of water safety in mine production, therefore, downhole advance ground water is particularly, At present, the ground water method to basically have two kinds of drilling and geophysical prospecting method, geophysical prospecting is the use of different material resistivity is different, sure there were no rock water gushing location. Drilling method is more direct, the effect is good, but the construction is relatively slow, geophysical prospecting technology advantage is ground water of distance and construction progress fast. Through the contrast of WoKuang in practical application, we come to the conclusion that the tunnel geophysical method leading ground water application not only has great economic benefits, but also has great time efficiency and safety benefits.important.