A METHODE FOR CONSTRUCTING

PURPOSE: An excavating method of an underground wiring pipe is provided to economically and stably form a pipe conduit by applying double power and reducing construction periods according to the progress of construction. CONSTITUTION: An excavating method of an underground wiring pipe comprises as follows. A beginning port and a destination port are formed on an arrival position and a beginning position of excavation. While a plurality of driving rods (4) to which a drill head is attached is successively connected, the driving rods are pressurized and rotated in order to excavate a guide hole. A plurality of main pipes (7) is successively connected to the driving rod, and a boring work of the guide hole and a main pipe embedment work are performed. The pressure pressurizing the main pipe from the destination port to the beginning port comprises rear pressure and rolling pressure.