Abstract: Engineering practice has proved that single geological prediction method in forecasting of tunnel occurrence of missed judgment, misjudgment phenomenon serious, extremely easy to cause the collapse, water bursting and burst mud geology disaster, it is difficult to ensure tunnel construction safety. In this paper, Using the method of TRT, transient electromagnetic method, ground penetrating radar method, advanced horizontal drilling method of comprehensive geological prediction technology to forecast the rich water area in tunnel. Practice has proved that the combination of geological prediction technology into full play the technical advantages of various geological forecast method, can from solid to plane, from speculation to the intuitive and constraints from the tunnel to the outside of the tunnel forecast the change of the surrounding rock and groundwater ahead, provides effective reference for decision-making for the tunnel construction. This approach can partly avoid the geological hazards, such as collapse tunnel water gushing and sudden mud.