Disclosed is a piercing tool indentation method. In particular, a new pipe burying method of the present invention comprises: an underground pipeline forming step of mounting a piercing tool on a propulsion hole before advancing the piercing tool by using a pneumatic pressure to allow the same to reach an arrival hole; a step of connecting a pipe to one end portion of a pneumatic hose which has reached the arrival hole by using a puller; and a step of operating the piercing tool such that the pipe can be reversely propelled to the propulsion hole after being inserted into the arrival hole along the underground pipeline, and burying the pipe connected to the puller such that the same can be inserted into the arrival hole before reaching the propulsion hole. Therefore, because a small hole can be formed by penetrating the ground after the present invention is moved forwards or backwards in a frontward and rearward vibration method by means of the pneumatic pressure of a compressor, the maximal effect can be created from the minimal investment costs.
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